90302136 has 32 divisors (see below), whose sum is σ = 237638400. Its totient is φ = 28516320.

The previous prime is 90302129. The next prime is 90302137. The reversal of 90302136 is 63120309.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90302137) 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, 98560 + ... + 99471.

It is an arithmetic number, because the mean of its divisors is an integer number (7426200).

Almost surely, 2^90302136 is an apocalyptic number.

It is an amenable number.

90302136 is an abundant number, since it is smaller than the sum of its proper divisors (147336264).

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

90302136 is a wasteful number, since it uses less digits than its factorization.

90302136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198059 (or 198055 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 90302136 is about 9502.7436038231. The cubic root of 90302136 is about 448.6413936835.

The spelling of 90302136 in words is "ninety million, three hundred two thousand, one hundred thirty-six".