90385980 has 24 divisors (see below), whose sum is σ = 253080912. Its totient is φ = 24102912.

The previous prime is 90385943. The next prime is 90385993. The reversal of 90385980 is 8958309.

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, 753157 + ... + 753276.

It is an arithmetic number, because the mean of its divisors is an integer number (10545038).

Almost surely, 2^90385980 is an apocalyptic number.

It is an amenable number.

90385980 is an abundant number, since it is smaller than the sum of its proper divisors (162694932).

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

90385980 is a wasteful number, since it uses less digits than its factorization.

90385980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506445 (or 1506443 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 90385980 is about 9507.1541483243. The cubic root of 90385980 is about 448.7802027039.

The spelling of 90385980 in words is "ninety million, three hundred eighty-five thousand, nine hundred eighty".