90712988 has 12 divisors (see below), whose sum is σ = 159814200. Its totient is φ = 45051792.

The previous prime is 90712981. The next prime is 90712991. The reversal of 90712988 is 88921709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90712981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75506 + ... + 76697.

It is an arithmetic number, because the mean of its divisors is an integer number (13317850).

Almost surely, 2^90712988 is an apocalyptic number.

It is an amenable number.

90712988 is a deficient number, since it is larger than the sum of its proper divisors (69101212).

90712988 is a wasteful number, since it uses less digits than its factorization.

90712988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152356 (or 152354 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 90712988 is about 9524.3366173188. The cubic root of 90712988 is about 449.3207662212.

The spelling of 90712988 in words is "ninety million, seven hundred twelve thousand, nine hundred eighty-eight".