38725891 has 8 divisors (see below), whose sum is σ = 39548880. Its totient is φ = 37911552.

The previous prime is 38725873. The next prime is 38725931. The reversal of 38725891 is 19852783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38725891 - 2⁷ = 38725763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38725831) 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, 7315 + ... + 11443.

It is an arithmetic number, because the mean of its divisors is an integer number (4943610).

Almost surely, 2^38725891 is an apocalyptic number.

38725891 is a deficient number, since it is larger than the sum of its proper divisors (822989).

38725891 is a wasteful number, since it uses less digits than its factorization.

38725891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325.

The product of its digits is 120960, while the sum is 43.

The square root of 38725891 is about 6223.0130162165. The cubic root of 38725891 is about 338.3247785672.

The spelling of 38725891 in words is "thirty-eight million, seven hundred twenty-five thousand, eight hundred ninety-one".