90385830 has 24 divisors (see below), whose sum is σ = 235003392. Its totient is φ = 24102864.

The previous prime is 90385807. The next prime is 90385843. The reversal of 90385830 is 3858309.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 502054 + ... + 502233.

It is an arithmetic number, because the mean of its divisors is an integer number (9791808).

Almost surely, 2^90385830 is an apocalyptic number.

90385830 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

90385830 is an abundant number, since it is smaller than the sum of its proper divisors (144617562).

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

90385830 is a wasteful number, since it uses less digits than its factorization.

90385830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004300 (or 1004297 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 90385830 is about 9507.1462595250. The cubic root of 90385830 is about 448.7799544461.

The spelling of 90385830 in words is "ninety million, three hundred eighty-five thousand, eight hundred thirty".