38239940 has 24 divisors (see below), whose sum is σ = 80449152. Its totient is φ = 15268320.

The previous prime is 38239939. The next prime is 38239967. The reversal of 38239940 is 4993283.

It is a super-2 number, since 2×38239940² = 2924586022407200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38239894 and 38239903.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12437 + ... + 15203.

It is an arithmetic number, because the mean of its divisors is an integer number (3352048).

Almost surely, 2^38239940 is an apocalyptic number.

It is an amenable number.

38239940 is an abundant number, since it is smaller than the sum of its proper divisors (42209212).

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

38239940 is a wasteful number, since it uses less digits than its factorization.

38239940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467 (or 3465 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 38239940 is about 6183.8450821475. The cubic root of 38239940 is about 336.9036639052.

The spelling of 38239940 in words is "thirty-eight million, two hundred thirty-nine thousand, nine hundred forty".