90007732 has 6 divisors (see below), whose sum is σ = 157513538. Its totient is φ = 45003864.

The previous prime is 90007721. The next prime is 90007817. The reversal of 90007732 is 23770009.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 88435216 + 1572516 = 9404^2 + 1254^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90007732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11250963 + ... + 11250970.

Almost surely, 2^90007732 is an apocalyptic number.

It is an amenable number.

90007732 is a deficient number, since it is larger than the sum of its proper divisors (67505806).

90007732 is a wasteful number, since it uses less digits than its factorization.

90007732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22501937 (or 22501935 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 90007732 is about 9487.2404839342. The cubic root of 90007732 is about 448.1533077036.

The spelling of 90007732 in words is "ninety million, seven thousand, seven hundred thirty-two".