90731152 has 10 divisors (see below), whose sum is σ = 175791638. Its totient is φ = 45365568.

The previous prime is 90731119. The next prime is 90731153. The reversal of 90731152 is 25113709.

It can be written as a sum of positive squares in only one way, i.e., 76108176 + 14622976 = 8724^2 + 3824^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90731152.

It is not an unprimeable number, because it can be changed into a prime (90731153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2835333 + ... + 2835364.

Almost surely, 2^90731152 is an apocalyptic number.

It is an amenable number.

90731152 is a deficient number, since it is larger than the sum of its proper divisors (85060486).

90731152 is a wasteful number, since it uses less digits than its factorization.

90731152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670705 (or 5670699 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 90731152 is about 9525.2901268150. The cubic root of 90731152 is about 449.3507542743.

The spelling of 90731152 in words is "ninety million, seven hundred thirty-one thousand, one hundred fifty-two".