90573388 has 6 divisors (see below), whose sum is σ = 158503436. Its totient is φ = 45286692.

The previous prime is 90573383. The next prime is 90573389. The reversal of 90573388 is 88337509.

It is a happy number.

It is a super-2 number, since 2×90573388² = 16407077227597088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90573383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11321670 + ... + 11321677.

Almost surely, 2^90573388 is an apocalyptic number.

It is an amenable number.

90573388 is a deficient number, since it is larger than the sum of its proper divisors (67930048).

90573388 is a wasteful number, since it uses less digits than its factorization.

90573388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22643351 (or 22643349 counting only the distinct ones).

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

The square root of 90573388 is about 9517.0052012175. The cubic root of 90573388 is about 449.0901583658.

The spelling of 90573388 in words is "ninety million, five hundred seventy-three thousand, three hundred eighty-eight".