3868838928 has 30 divisors (see below), whose sum is σ = 10827376014. Its totient is φ = 1289612928.

The previous prime is 3868838927. The next prime is 3868838959. The reversal of 3868838928 is 8298388683.

It can be written as a sum of positive squares in only one way, i.e., 3491391744 + 377447184 = 59088^2 + 19428^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (3868838921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13433325 + ... + 13433612.

Almost surely, 2^3868838928 is an apocalyptic number.

It is an amenable number.

3868838928 is an abundant number, since it is smaller than the sum of its proper divisors (6958537086).

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

3868838928 is a wasteful number, since it uses less digits than its factorization.

3868838928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26866951 (or 26866942 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 63.

The square root of 3868838928 is about 62199.9913826361. The cubic root of 3868838928 is about 1569.8574428014.

The spelling of 3868838928 in words is "three billion, eight hundred sixty-eight million, eight hundred thirty-eight thousand, nine hundred twenty-eight".