38716640 has 24 divisors (see below), whose sum is σ = 91468440. Its totient is φ = 15486592.

The previous prime is 38716627. The next prime is 38716649. The reversal of 38716640 is 4661783.

It is a self number, because there is not a number n which added to its sum of digits gives 38716640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38716649) 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 3 ways as a sum of consecutive naturals, for example, 120830 + ... + 121149.

It is an arithmetic number, because the mean of its divisors is an integer number (3811185).

Almost surely, 2^38716640 is an apocalyptic number.

It is an amenable number.

38716640 is an abundant number, since it is smaller than the sum of its proper divisors (52751800).

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

38716640 is a wasteful number, since it uses less digits than its factorization.

38716640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241994 (or 241986 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 38716640 is about 6222.2696823587. The cubic root of 38716640 is about 338.2978362839.

The spelling of 38716640 in words is "thirty-eight million, seven hundred sixteen thousand, six hundred forty".