38936690 has 16 divisors (see below), whose sum is σ = 75477528. Its totient is φ = 14376576.

The previous prime is 38936671. The next prime is 38936693. The reversal of 38936690 is 9663983.

It can be written as a sum of positive squares in 4 ways, for example, as 19018321 + 19918369 = 4361^2 + 4463^2 .

It is a super-2 number, since 2×38936690² = 3032131656312200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38936693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149627 + ... + 149886.

Almost surely, 2^38936690 is an apocalyptic number.

38936690 is a deficient number, since it is larger than the sum of its proper divisors (36540838).

38936690 is a wasteful number, since it uses less digits than its factorization.

38936690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299533.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 38936690 is about 6239.9270829073. The cubic root of 38936690 is about 338.9375426975.

The spelling of 38936690 in words is "thirty-eight million, nine hundred thirty-six thousand, six hundred ninety".