38979520 has 56 divisors (see below), whose sum is σ = 95115888. Its totient is φ = 15206400.

The previous prime is 38979517. The next prime is 38979527. The reversal of 38979520 is 2597983.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38979527) 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 in 7 ways as a sum of consecutive naturals, for example, 11635 + ... + 14605.

It is an arithmetic number, because the mean of its divisors is an integer number (1698498).

Almost surely, 2^38979520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38979520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47557944).

38979520 is an abundant number, since it is smaller than the sum of its proper divisors (56136368).

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

38979520 is a wasteful number, since it uses less digits than its factorization.

38979520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029 (or 3019 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 38979520 is about 6243.3580707821. The cubic root of 38979520 is about 339.0617732151.

The spelling of 38979520 in words is "thirty-eight million, nine hundred seventy-nine thousand, five hundred twenty".