38974840 has 32 divisors (see below), whose sum is σ = 90720000. Its totient is φ = 15051904.

The previous prime is 38974823. The next prime is 38974847. The reversal of 38974840 is 4847983.

38974840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38974847) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15640 + ... + 17959.

It is an arithmetic number, because the mean of its divisors is an integer number (2835000).

Almost surely, 2^38974840 is an apocalyptic number.

It is an amenable number.

38974840 is an abundant number, since it is smaller than the sum of its proper divisors (51745160).

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

38974840 is a wasteful number, since it uses less digits than its factorization.

38974840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33639 (or 33635 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 38974840 is about 6242.9832612302. The cubic root of 38974840 is about 339.0482030753.

The spelling of 38974840 in words is "thirty-eight million, nine hundred seventy-four thousand, eight hundred forty".