90236732 has 6 divisors (see below), whose sum is σ = 157914288. Its totient is φ = 45118364.

The previous prime is 90236693. The next prime is 90236737. The reversal of 90236732 is 23763209.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90236737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11279588 + ... + 11279595.

It is an arithmetic number, because the mean of its divisors is an integer number (26319048).

Almost surely, 2^90236732 is an apocalyptic number.

It is an amenable number.

90236732 is a deficient number, since it is larger than the sum of its proper divisors (67677556).

90236732 is a wasteful number, since it uses less digits than its factorization.

90236732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22559187 (or 22559185 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 90236732 is about 9499.3016585431. The cubic root of 90236732 is about 448.5330535783.

The spelling of 90236732 in words is "ninety million, two hundred thirty-six thousand, seven hundred thirty-two".