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156167028 = 2234481997
BaseRepresentation
bin10010100111011…
…10101101110100
3101212212002220000
421103232231310
5304434321103
623255111300
73604253313
oct1123565564
9355762800
10156167028
1180174666
1244372530
132647ac34
1416a5227a
15da9baa3
hex94eeb74

156167028 has 30 divisors (see below), whose sum is σ = 408252306. Its totient is φ = 52055568.

The previous prime is 156167027. The next prime is 156167029. The reversal of 156167028 is 820761651.

156167028 is a `hidden beast` number, since 1 + 561 + 6 + 70 + 28 = 666.

It is an interprime number because it is at equal distance from previous prime (156167027) and next prime (156167029).

It can be written as a sum of positive squares in only one way, i.e., 156050064 + 116964 = 12492^2 + 342^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 156166983 and 156167001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156167021) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 240675 + ... + 241322.

Almost surely, 2156167028 is an apocalyptic number.

156167028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

156167028 is an abundant number, since it is smaller than the sum of its proper divisors (252085278).

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

156167028 is a wasteful number, since it uses less digits than its factorization.

156167028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482013 (or 482002 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 156167028 is about 12496.6806792844. The cubic root of 156167028 is about 538.5133181582.

The spelling of 156167028 in words is "one hundred fifty-six million, one hundred sixty-seven thousand, twenty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 481997 963994 1445991 1927988 2891982 4337973 5783964 8675946 13013919 17351892 26027838 39041757 52055676 78083514 156167028