90932490 has 128 divisors (see below), whose sum is σ = 280247040. Its totient is φ = 20736000.

The previous prime is 90932449. The next prime is 90932519. The reversal of 90932490 is 9423909.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49590 + ... + 51390.

It is an arithmetic number, because the mean of its divisors is an integer number (2189430).

Almost surely, 2^90932490 is an apocalyptic number.

90932490 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 90932490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140123520).

90932490 is an abundant number, since it is smaller than the sum of its proper divisors (189314550).

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

90932490 is a wasteful number, since it uses less digits than its factorization.

90932490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845 (or 1839 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 90932490 is about 9535.8528721872. The cubic root of 90932490 is about 449.6828876965.

The spelling of 90932490 in words is "ninety million, nine hundred thirty-two thousand, four hundred ninety".