3172778928 has 120 divisors (see below), whose sum is σ = 9738233856. Its totient is φ = 956323200.

The previous prime is 3172778927. The next prime is 3172779019. The reversal of 3172778928 is 8298772713.

3172778928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3172778928² = 20133052251921658368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3172778923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297301 + ... + 307787.

Almost surely, 2^3172778928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3172778928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4869116928).

3172778928 is an abundant number, since it is smaller than the sum of its proper divisors (6565454928).

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

3172778928 is a wasteful number, since it uses less digits than its factorization.

3172778928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10703 (or 10694 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 3172778928 is about 56327.4260729176. The cubic root of 3172778928 is about 1469.4222246946.

The spelling of 3172778928 in words is "three billion, one hundred seventy-two million, seven hundred seventy-eight thousand, nine hundred twenty-eight".