90618252 has 24 divisors (see below), whose sum is σ = 220636416. Its totient is φ = 28892688.

The previous prime is 90618251. The next prime is 90618257. The reversal of 90618252 is 25281609.

It is not an unprimeable number, because it can be changed into a prime (90618251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163888 + ... + 164439.

It is an arithmetic number, because the mean of its divisors is an integer number (9193184).

Almost surely, 2^90618252 is an apocalyptic number.

90618252 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

90618252 is an abundant number, since it is smaller than the sum of its proper divisors (130018164).

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

90618252 is a wasteful number, since it uses less digits than its factorization.

90618252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328357 (or 328355 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 90618252 is about 9519.3619534084. The cubic root of 90618252 is about 449.1642958712.

The spelling of 90618252 in words is "ninety million, six hundred eighteen thousand, two hundred fifty-two".