90261900 has 54 divisors (see below), whose sum is σ = 282923732. Its totient is φ = 24069600.

The previous prime is 90261893. The next prime is 90261923. The reversal of 90261900 is 916209.

It is a happy number.

It is a super-2 number, since 2×90261900² = 16294421183220000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 49246 + ... + 51045.

Almost surely, 2^90261900 is an apocalyptic number.

90261900 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90261900 is an abundant number, since it is smaller than the sum of its proper divisors (192661832).

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

90261900 is a wasteful number, since it uses less digits than its factorization.

90261900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100311 (or 100301 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 90261900 is about 9500.6262951450. The cubic root of 90261900 is about 448.5747499411.

The spelling of 90261900 in words is "ninety million, two hundred sixty-one thousand, nine hundred".