90730632 has 32 divisors (see below), whose sum is σ = 240170400. Its totient is φ = 28464384.

The previous prime is 90730603. The next prime is 90730639. The reversal of 90730632 is 23603709.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 90730632.

It is not an unprimeable number, because it can be changed into a prime (90730639) 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, 110782 + ... + 111597.

It is an arithmetic number, because the mean of its divisors is an integer number (7505325).

Almost surely, 2^90730632 is an apocalyptic number.

It is an amenable number.

90730632 is an abundant number, since it is smaller than the sum of its proper divisors (149439768).

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

90730632 is a wasteful number, since it uses less digits than its factorization.

90730632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222405 (or 222401 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 90730632 is about 9525.2628310194. The cubic root of 90730632 is about 449.3498958303.

The spelling of 90730632 in words is "ninety million, seven hundred thirty thousand, six hundred thirty-two".