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156045930 = 23561711201
BaseRepresentation
bin10010100110100…
…01001001101010
3101212121221202220
421103101021222
5304421432210
623252334510
73603240255
oct1123211152
9355557686
10156045930
11800a1687
1244314436
1326437a91
1416a2009c
15da75c70
hex94d126a

156045930 has 64 divisors (see below), whose sum is σ = 386332416. Its totient is φ = 40320000.

The previous prime is 156045919. The next prime is 156045943. The reversal of 156045930 is 39540651.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 156045891 and 156045900.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129330 + ... + 130530.

It is an arithmetic number, because the mean of its divisors is an integer number (6036444).

Almost surely, 2156045930 is an apocalyptic number.

156045930 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 156045930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193166208).

156045930 is an abundant number, since it is smaller than the sum of its proper divisors (230286486).

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

156045930 is a wasteful number, since it uses less digits than its factorization.

156045930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 156045930 is about 12491.8345330060. The cubic root of 156045930 is about 538.3740874253.

The spelling of 156045930 in words is "one hundred fifty-six million, forty-five thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 61 71 122 142 183 213 305 355 366 426 610 710 915 1065 1201 1830 2130 2402 3603 4331 6005 7206 8662 12010 12993 18015 21655 25986 36030 43310 64965 73261 85271 129930 146522 170542 219783 255813 366305 426355 439566 511626 732610 852710 1098915 1279065 2197830 2558130 5201531 10403062 15604593 26007655 31209186 52015310 78022965 156045930