38121272 has 32 divisors (see below), whose sum is σ = 82166400. Its totient is φ = 16242144.

The previous prime is 38121271. The next prime is 38121301. The reversal of 38121272 is 27212183.

38121272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38121271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8123 + ... + 11925.

It is an arithmetic number, because the mean of its divisors is an integer number (2567700).

Almost surely, 2^38121272 is an apocalyptic number.

It is an amenable number.

38121272 is an abundant number, since it is smaller than the sum of its proper divisors (44045128).

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

38121272 is a wasteful number, since it uses less digits than its factorization.

38121272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995 (or 3991 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 38121272 is about 6174.2426256181. The cubic root of 38121272 is about 336.5548043006.

The spelling of 38121272 in words is "thirty-eight million, one hundred twenty-one thousand, two hundred seventy-two".