90612920 has 16 divisors (see below), whose sum is σ = 203879160. Its totient is φ = 36245152.

The previous prime is 90612917. The next prime is 90612923. The reversal of 90612920 is 2921609.

It is an interprime number because it is at equal distance from previous prime (90612917) and next prime (90612923).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90612923) 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, 1132622 + ... + 1132701.

Almost surely, 2^90612920 is an apocalyptic number.

It is an amenable number.

90612920 is an abundant number, since it is smaller than the sum of its proper divisors (113266240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90612920 is a wasteful number, since it uses less digits than its factorization.

90612920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265334 (or 2265330 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 90612920 is about 9519.0818885016. The cubic root of 90612920 is about 449.1554860530.

The spelling of 90612920 in words is "ninety million, six hundred twelve thousand, nine hundred twenty".