90303388 has 24 divisors (see below), whose sum is σ = 191231712. Its totient is φ = 36424704.

The previous prime is 90303379. The next prime is 90303407. The reversal of 90303388 is 88330309.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94381 + ... + 95332.

It is an arithmetic number, because the mean of its divisors is an integer number (7967988).

Almost surely, 2^90303388 is an apocalyptic number.

It is an amenable number.

90303388 is an abundant number, since it is smaller than the sum of its proper divisors (100928324).

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

90303388 is a wasteful number, since it uses less digits than its factorization.

90303388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189741 (or 189739 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 90303388 is about 9502.8094793066. The cubic root of 90303388 is about 448.6434670801.

The spelling of 90303388 in words is "ninety million, three hundred three thousand, three hundred eighty-eight".