3894367872 has 32 divisors (see below), whose sum is σ = 10344415680. Its totient is φ = 1298122496.

The previous prime is 3894367849. The next prime is 3894367907. The reversal of 3894367872 is 2787634983.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×3894367872² = 30332202244931616768, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5070408 + ... + 5071175.

It is an arithmetic number, because the mean of its divisors is an integer number (323262990).

Almost surely, 2^3894367872 is an apocalyptic number.

3894367872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3894367872 is an abundant number, since it is smaller than the sum of its proper divisors (6450047808).

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

3894367872 is a wasteful number, since it uses less digits than its factorization.

3894367872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10141600 (or 10141588 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 57.

The square root of 3894367872 is about 62404.8705791463. The cubic root of 3894367872 is about 1573.3028325665.

The spelling of 3894367872 in words is "three billion, eight hundred ninety-four million, three hundred sixty-seven thousand, eight hundred seventy-two".