900156 has 12 divisors (see below), whose sum is σ = 2100392. Its totient is φ = 300048.

The previous prime is 900149. The next prime is 900157. The reversal of 900156 is 651009.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 900156.

It is not an unprimeable number, because it can be changed into a prime (900157) by changing a digit.

900156 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 3 ways as a sum of consecutive naturals, for example, 37495 + ... + 37518.

2⁹⁰⁰¹⁵⁶ is an apocalyptic number.

It is an amenable number.

900156 is an abundant number, since it is smaller than the sum of its proper divisors (1200236).

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

900156 is a wasteful number, since it uses less digits than its factorization.

900156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75020 (or 75018 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 900156 is about 948.7655137072. The cubic root of 900156 is about 96.5545165214.

The spelling of 900156 in words is "nine hundred thousand, one hundred fifty-six".