90156236 has 24 divisors (see below), whose sum is σ = 168721056. Its totient is φ = 42003200.

The previous prime is 90156223. The next prime is 90156239. The reversal of 90156236 is 63265109.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (90156239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305 + ... + 13431.

It is an arithmetic number, because the mean of its divisors is an integer number (7030044).

Almost surely, 2^90156236 is an apocalyptic number.

It is an amenable number.

90156236 is a deficient number, since it is larger than the sum of its proper divisors (78564820).

90156236 is a wasteful number, since it uses less digits than its factorization.

90156236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13249 (or 13247 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 90156236 is about 9495.0637701913. The cubic root of 90156236 is about 448.3996420614.

It can be divided in two parts, 9015 and 6236, that added together give a palindrome (15251).

The spelling of 90156236 in words is "ninety million, one hundred fifty-six thousand, two hundred thirty-six".