90388860 has 48 divisors (see below), whose sum is σ = 253680000. Its totient is φ = 24047424.

The previous prime is 90388843. The next prime is 90388861. The reversal of 90388860 is 6888309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90388861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28431 + ... + 31449.

It is an arithmetic number, because the mean of its divisors is an integer number (5285000).

Almost surely, 2^90388860 is an apocalyptic number.

It is an amenable number.

90388860 is an abundant number, since it is smaller than the sum of its proper divisors (163291140).

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

90388860 is a wasteful number, since it uses less digits than its factorization.

90388860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3530 (or 3528 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 90388860 is about 9507.3056120018. The cubic root of 90388860 is about 448.7849691999.

The spelling of 90388860 in words is "ninety million, three hundred eighty-eight thousand, eight hundred sixty".