90738506 has 8 divisors (see below), whose sum is σ = 140801220. Its totient is φ = 43804768.

The previous prime is 90738481. The next prime is 90738517. The reversal of 90738506 is 60583709.

It can be written as a sum of positive squares in 2 ways, for example, as 82065481 + 8673025 = 9059^2 + 2945^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×90738506² = 16466952942224072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90738506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782171 + ... + 782286.

Almost surely, 2^90738506 is an apocalyptic number.

90738506 is a deficient number, since it is larger than the sum of its proper divisors (50062714).

90738506 is a wasteful number, since it uses less digits than its factorization.

90738506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564488.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 90738506 is about 9525.6761439805. The cubic root of 90738506 is about 449.3628943023.

The spelling of 90738506 in words is "ninety million, seven hundred thirty-eight thousand, five hundred six".