38921424 has 40 divisors (see below), whose sum is σ = 105841440. Its totient is φ = 12290688.

The previous prime is 38921401. The next prime is 38921429. The reversal of 38921424 is 42412983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38921429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20427 + ... + 22250.

It is an arithmetic number, because the mean of its divisors is an integer number (2646036).

Almost surely, 2^38921424 is an apocalyptic number.

It is an amenable number.

38921424 is an abundant number, since it is smaller than the sum of its proper divisors (66920016).

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

38921424 is a wasteful number, since it uses less digits than its factorization.

38921424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42707 (or 42701 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 38921424 is about 6238.7037115093. The cubic root of 38921424 is about 338.8932408929.

The spelling of 38921424 in words is "thirty-eight million, nine hundred twenty-one thousand, four hundred twenty-four".