38891375 has 16 divisors (see below), whose sum is σ = 48775584. Its totient is φ = 30960000.

The previous prime is 38891371. The next prime is 38891383. The reversal of 38891375 is 57319883.

It is a happy number.

It is not a de Polignac number, because 38891375 - 2² = 38891371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38891371) 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, 29480 + ... + 30770.

It is an arithmetic number, because the mean of its divisors is an integer number (3048474).

Almost surely, 2^38891375 is an apocalyptic number.

38891375 is a deficient number, since it is larger than the sum of its proper divisors (9884209).

38891375 is a wasteful number, since it uses less digits than its factorization.

38891375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1537 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 38891375 is about 6236.2949737805. The cubic root of 38891375 is about 338.8060050919.

The spelling of 38891375 in words is "thirty-eight million, eight hundred ninety-one thousand, three hundred seventy-five".