38683521 has 8 divisors (see below), whose sum is σ = 57308960. Its totient is φ = 25788996.

The previous prime is 38683507. The next prime is 38683549. The reversal of 38683521 is 12538683.

It is not a de Polignac number, because 38683521 - 2¹⁵ = 38650753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38683591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716335 + ... + 716388.

It is an arithmetic number, because the mean of its divisors is an integer number (7163620).

Almost surely, 2^38683521 is an apocalyptic number.

It is an amenable number.

38683521 is a deficient number, since it is larger than the sum of its proper divisors (18625439).

38683521 is a wasteful number, since it uses less digits than its factorization.

38683521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432732 (or 1432726 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 38683521 is about 6219.6077850617. The cubic root of 38683521 is about 338.2013464861.

It can be divided in two parts, 38683 and 521, that added together give a square (39204 = 198²).

The spelling of 38683521 in words is "thirty-eight million, six hundred eighty-three thousand, five hundred twenty-one".