3838478272 has 56 divisors (see below), whose sum is σ = 7842172784. Its totient is φ = 1862756352.

The previous prime is 3838478239. The next prime is 3838478299. The reversal of 3838478272 is 2728748383.

It is a super-2 number, since 2×3838478272² = 29467830889232211968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1080403 + ... + 1083949.

Almost surely, 2^3838478272 is an apocalyptic number.

3838478272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3838478272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3921086392).

3838478272 is an abundant number, since it is smaller than the sum of its proper divisors (4003694512).

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

3838478272 is a wasteful number, since it uses less digits than its factorization.

3838478272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053 (or 4043 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 52.

The square root of 3838478272 is about 61955.4539326442. The cubic root of 3838478272 is about 1565.7401762310.

The spelling of 3838478272 in words is "three billion, eight hundred thirty-eight million, four hundred seventy-eight thousand, two hundred seventy-two".