90537388 has 12 divisors (see below), whose sum is σ = 161126280. Its totient is φ = 44501312.

The previous prime is 90537373. The next prime is 90537439. The reversal of 90537388 is 88373509.

It is a happy number.

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, 191581 + ... + 192052.

It is an arithmetic number, because the mean of its divisors is an integer number (13427190).

Almost surely, 2^90537388 is an apocalyptic number.

It is an amenable number.

90537388 is a deficient number, since it is larger than the sum of its proper divisors (70588892).

90537388 is a wasteful number, since it uses less digits than its factorization.

90537388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383696 (or 383694 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 90537388 is about 9515.1136619591. The cubic root of 90537388 is about 449.0306508640.

The spelling of 90537388 in words is "ninety million, five hundred thirty-seven thousand, three hundred eighty-eight".