90641072 has 20 divisors (see below), whose sum is σ = 176784816. Its totient is φ = 45019200.

The previous prime is 90641053. The next prime is 90641113. The reversal of 90641072 is 27014609.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16343 + ... + 21174.

Almost surely, 2^90641072 is an apocalyptic number.

It is an amenable number.

90641072 is a deficient number, since it is larger than the sum of its proper divisors (86143744).

90641072 is a wasteful number, since it uses less digits than its factorization.

90641072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37676 (or 37670 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 90641072 is about 9520.5604877024. The cubic root of 90641072 is about 449.2019964033.

The spelling of 90641072 in words is "ninety million, six hundred forty-one thousand, seventy-two".