90174632 has 8 divisors (see below), whose sum is σ = 169077450. Its totient is φ = 45087312.

The previous prime is 90174631. The next prime is 90174649. The reversal of 90174632 is 23647109.

It can be written as a sum of positive squares in only one way, i.e., 81613156 + 8561476 = 9034^2 + 2926^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (90174631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5635907 + ... + 5635922.

Almost surely, 2^90174632 is an apocalyptic number.

It is an amenable number.

90174632 is a deficient number, since it is larger than the sum of its proper divisors (78902818).

90174632 is a wasteful number, since it uses less digits than its factorization.

90174632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11271835 (or 11271831 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 90174632 is about 9496.0324346540. The cubic root of 90174632 is about 448.4301380063.

The spelling of 90174632 in words is "ninety million, one hundred seventy-four thousand, six hundred thirty-two".