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122618088 = 2332972181
BaseRepresentation
bin1110100111100…
…00000011101000
322112201122101200
413103300003220
5222342234323
620100044200
73016144065
oct723600350
9275648350
10122618088
116323a86a
1235093660
131c5327a8
14123dbc6c
15ab71443
hex74f00e8

122618088 has 72 divisors (see below), whose sum is σ = 337403430. Its totient is φ = 40227840.

The previous prime is 122618087. The next prime is 122618137. The reversal of 122618088 is 880816221.

It can be written as a sum of positive squares in 3 ways, for example, as 61496964 + 61121124 = 7842^2 + 7818^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (122618087) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 677358 + ... + 677538.

Almost surely, 2122618088 is an apocalyptic number.

122618088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122618088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168701715).

122618088 is an abundant number, since it is smaller than the sum of its proper divisors (214785342).

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

122618088 is a wasteful number, since it uses less digits than its factorization.

122618088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 122618088 is about 11073.3051976363. The cubic root of 122618088 is about 496.8037285693.

The spelling of 122618088 in words is "one hundred twenty-two million, six hundred eighteen thousand, eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 97 181 194 291 362 388 543 582 724 776 873 1086 1164 1448 1629 1746 2172 2328 3258 3492 4344 6516 6984 9409 13032 17557 18818 28227 35114 37636 52671 56454 70228 75272 84681 105342 112908 140456 158013 169362 210684 225816 316026 338724 421368 632052 677448 1264104 1703029 3406058 5109087 6812116 10218174 13624232 15327261 20436348 30654522 40872696 61309044 122618088