90501930 has 48 divisors (see below), whose sum is σ = 235783080. Its totient is φ = 24084864.

The previous prime is 90501919. The next prime is 90501967. The reversal of 90501930 is 3910509.

It can be written as a sum of positive squares in 4 ways, for example, as 51451929 + 39050001 = 7173^2 + 6249^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90501894 and 90501903.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74004 + ... + 75216.

Almost surely, 2^90501930 is an apocalyptic number.

90501930 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

90501930 is an abundant number, since it is smaller than the sum of its proper divisors (145281150).

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

90501930 is a wasteful number, since it uses less digits than its factorization.

90501930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2052 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 90501930 is about 9513.2502332273. The cubic root of 90501930 is about 448.9720238586.

The spelling of 90501930 in words is "ninety million, five hundred one thousand, nine hundred thirty".