Search a number
-
+
122633838 = 23723253
BaseRepresentation
bin1110100111100…
…11111001101110
322112202110000000
413103303321232
5222343240323
620100245130
73016241025
oct723637156
9275673000
10122633838
1163250688
12350a07a6
131c539a02
14124038bc
15ab75e43
hex74f3e6e

122633838 has 96 divisors (see below), whose sum is σ = 293842080. Its totient is φ = 38362896.

The previous prime is 122633789. The next prime is 122633839. The reversal of 122633838 is 838336221.

122633838 is a `hidden beast` number, since 12 + 2 + 633 + 8 + 3 + 8 = 666.

It is a super-2 number, since 2×1226338382 = 30078116445220488, which contains 22 as substring.

Its product of digits (41472) is a multiple of the sum of its prime divisors (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122633839) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2313820 + ... + 2313872.

It is an arithmetic number, because the mean of its divisors is an integer number (3060855).

Almost surely, 2122633838 is an apocalyptic number.

122633838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122633838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146921040).

122633838 is an abundant number, since it is smaller than the sum of its proper divisors (171208242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122633838 is an frugal number, since it uses more digits than its factorization.

122633838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 81 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 122633838 is about 11074.0163445789. The cubic root of 122633838 is about 496.8249987421.

The spelling of 122633838 in words is "one hundred twenty-two million, six hundred thirty-three thousand, eight hundred thirty-eight".

Divisors: 1 2 3 6 9 18 23 27 46 53 54 69 81 106 138 159 162 207 243 318 414 477 486 529 621 729 954 1058 1219 1242 1431 1458 1587 1863 2187 2438 2862 3174 3657 3726 4293 4374 4761 5589 7314 8586 9522 10971 11178 12879 14283 16767 21942 25758 28037 28566 32913 33534 38637 42849 50301 56074 65826 77274 84111 85698 98739 100602 115911 128547 168222 197478 231822 252333 257094 296217 385641 504666 592434 756999 771282 888651 1156923 1513998 1777302 2270997 2313846 2665953 4541994 5331906 6812991 13625982 20438973 40877946 61316919 122633838