38490724 has 6 divisors (see below), whose sum is σ = 67358774. Its totient is φ = 19245360.

The previous prime is 38490721. The next prime is 38490731. The reversal of 38490724 is 42709483.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37454400 + 1036324 = 6120^2 + 1018^2 .

It is not an unprimeable number, because it can be changed into a prime (38490721) 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, 4811337 + ... + 4811344.

Almost surely, 2^38490724 is an apocalyptic number.

It is an amenable number.

38490724 is a deficient number, since it is larger than the sum of its proper divisors (28868050).

38490724 is a wasteful number, since it uses less digits than its factorization.

38490724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9622685 (or 9622683 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 38490724 is about 6204.0892965850. The cubic root of 38490724 is about 337.6385501564.

The spelling of 38490724 in words is "thirty-eight million, four hundred ninety thousand, seven hundred twenty-four".