38997628 has 12 divisors (see below), whose sum is σ = 70447552. Its totient is φ = 18869760.

The previous prime is 38997599. The next prime is 38997631. The reversal of 38997628 is 82679983.

38997628 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 an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 157125 + ... + 157372.

Almost surely, 2^38997628 is an apocalyptic number.

It is an amenable number.

38997628 is a deficient number, since it is larger than the sum of its proper divisors (31449924).

38997628 is a wasteful number, since it uses less digits than its factorization.

38997628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314532 (or 314530 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 38997628 is about 6244.8080835203. The cubic root of 38997628 is about 339.1142689881.

The spelling of 38997628 in words is "thirty-eight million, nine hundred ninety-seven thousand, six hundred twenty-eight".