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402156 = 223211171
BaseRepresentation
bin1100010001011101100
3202102122200
41202023230
5100332111
612341500
73263316
oct1421354
9672580
10402156
11255167
12174890
13111081
14a67b6
157e256
hex622ec

402156 has 18 divisors (see below), whose sum is σ = 1016652. Its totient is φ = 134040.

The previous prime is 402139. The next prime is 402197. The reversal of 402156 is 651204.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

402156 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5550 + ... + 5621.

2402156 is an apocalyptic number.

It is an amenable number.

402156 is an abundant number, since it is smaller than the sum of its proper divisors (614496).

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

402156 is a wasteful number, since it uses less digits than its factorization.

402156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11181 (or 11176 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 402156 is about 634.1577090914. The cubic root of 402156 is about 73.8127723724.

The spelling of 402156 in words is "four hundred two thousand, one hundred fifty-six".

Divisors: 1 2 3 4 6 9 12 18 36 11171 22342 33513 44684 67026 100539 134052 201078 402156