38974240 has 24 divisors (see below), whose sum is σ = 92077020. Its totient is φ = 15589632.

The previous prime is 38974237. The next prime is 38974241. The reversal of 38974240 is 4247983.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32764176 + 6210064 = 5724^2 + 2492^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 38974240.

It is not an unprimeable number, because it can be changed into a prime (38974241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121635 + ... + 121954.

Almost surely, 2^38974240 is an apocalyptic number.

It is an amenable number.

38974240 is an abundant number, since it is smaller than the sum of its proper divisors (53102780).

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

38974240 is a wasteful number, since it uses less digits than its factorization.

38974240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243604 (or 243596 counting only the distinct ones).

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

The square root of 38974240 is about 6242.9352070961. The cubic root of 38974240 is about 339.0464632352.

The spelling of 38974240 in words is "thirty-eight million, nine hundred seventy-four thousand, two hundred forty".