38491824 has 80 divisors (see below), whose sum is σ = 114794240. Its totient is φ = 10886400.

The previous prime is 38491823. The next prime is 38491841. The reversal of 38491824 is 42819483.

It is not an unprimeable number, because it can be changed into a prime (38491823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36099 + ... + 37149.

It is an arithmetic number, because the mean of its divisors is an integer number (1434928).

Almost surely, 2^38491824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38491824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57397120).

38491824 is an abundant number, since it is smaller than the sum of its proper divisors (76302416).

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

38491824 is a wasteful number, since it uses less digits than its factorization.

38491824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178 (or 1172 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 38491824 is about 6204.1779471579. The cubic root of 38491824 is about 337.6417665059.

The spelling of 38491824 in words is "thirty-eight million, four hundred ninety-one thousand, eight hundred twenty-four".