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12398130 = 233547977
BaseRepresentation
bin101111010010…
…111000110010
3212022220001000
4233102320302
511133220010
61121422430
7210245103
oct57227062
925286030
1012398130
116aa8998
12419aa16
132751294
14190a3aa
15114d7c0
hexbd2e32

12398130 has 64 divisors (see below), whose sum is σ = 33799680. Its totient is φ = 3232512.

The previous prime is 12398119. The next prime is 12398137. The reversal of 12398130 is 3189321.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12398094 and 12398103.

It is not an unprimeable number, because it can be changed into a prime (12398137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12202 + ... + 13178.

It is an arithmetic number, because the mean of its divisors is an integer number (528120).

Almost surely, 212398130 is an apocalyptic number.

12398130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12398130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16899840).

12398130 is an abundant number, since it is smaller than the sum of its proper divisors (21401550).

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

12398130 is a wasteful number, since it uses less digits than its factorization.

12398130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 12398130 is about 3521.0978401629. The cubic root of 12398130 is about 231.4472697022.

The spelling of 12398130 in words is "twelve million, three hundred ninety-eight thousand, one hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 47 54 90 94 135 141 235 270 282 423 470 705 846 977 1269 1410 1954 2115 2538 2931 4230 4885 5862 6345 8793 9770 12690 14655 17586 26379 29310 43965 45919 52758 87930 91838 131895 137757 229595 263790 275514 413271 459190 688785 826542 1239813 1377570 2066355 2479626 4132710 6199065 12398130