90418632 has 32 divisors (see below), whose sum is σ = 226536480. Its totient is φ = 30074240.

The previous prime is 90418567. The next prime is 90418633. The reversal of 90418632 is 23681409.

It is a junction number, because it is equal to n+sod(n) for n = 90418593 and 90418602.

It is not an unprimeable number, because it can be changed into a prime (90418633) 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, 7948 + ... + 15620.

It is an arithmetic number, because the mean of its divisors is an integer number (7079265).

Almost surely, 2^90418632 is an apocalyptic number.

It is an amenable number.

90418632 is an abundant number, since it is smaller than the sum of its proper divisors (136117848).

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

90418632 is a wasteful number, since it uses less digits than its factorization.

90418632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8173 (or 8169 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 90418632 is about 9508.8712263864. The cubic root of 90418632 is about 448.8342369209.

The spelling of 90418632 in words is "ninety million, four hundred eighteen thousand, six hundred thirty-two".