90402336 has 36 divisors (see below), whose sum is σ = 257082462. Its totient is φ = 30134016.

The previous prime is 90402329. The next prime is 90402349. The reversal of 90402336 is 63320409.

It can be written as a sum of positive squares in only one way, i.e., 56250000 + 34152336 = 7500^2 + 5844^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156661 + ... + 157236.

Almost surely, 2^90402336 is an apocalyptic number.

90402336 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

90402336 is an abundant number, since it is smaller than the sum of its proper divisors (166680126).

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

90402336 is a wasteful number, since it uses less digits than its factorization.

90402336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313913 (or 313902 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 90402336 is about 9508.0143037335. The cubic root of 90402336 is about 448.8072710843.

The spelling of 90402336 in words is "ninety million, four hundred two thousand, three hundred thirty-six".