90388 has 12 divisors (see below), whose sum is σ = 161280. Its totient is φ = 44312.

The previous prime is 90379. The next prime is 90397. The reversal of 90388 is 88309.

It is an interprime number because it is at equal distance from previous prime (90379) and next prime (90397).

It is a congruent number.

It is an unprimeable number.

90388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45 + ... + 427.

It is an arithmetic number, because the mean of its divisors is an integer number (13440).

2⁹⁰³⁸⁸ is an apocalyptic number.

It is an amenable number.

90388 is a deficient number, since it is larger than the sum of its proper divisors (70892).

90388 is a wasteful number, since it uses less digits than its factorization.

90388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 90388 is about 300.6459712020. The cubic root of 90388 is about 44.8783545882.

The spelling of 90388 in words is "ninety thousand, three hundred eighty-eight".