90815132 has 24 divisors (see below), whose sum is σ = 166180896. Its totient is φ = 43343168.

The previous prime is 90815119. The next prime is 90815147. The reversal of 90815132 is 23151809.

It is a junction number, because it is equal to n+sod(n) for n = 90815095 and 90815104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70478 + ... + 71754.

It is an arithmetic number, because the mean of its divisors is an integer number (6924204).

Almost surely, 2^90815132 is an apocalyptic number.

90815132 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

90815132 is a deficient number, since it is larger than the sum of its proper divisors (75365764).

90815132 is a wasteful number, since it uses less digits than its factorization.

90815132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077 (or 2075 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 90815132 is about 9529.6973719001. The cubic root of 90815132 is about 449.4893499629.

The spelling of 90815132 in words is "ninety million, eight hundred fifteen thousand, one hundred thirty-two".