3213172628 has 24 divisors (see below), whose sum is σ = 5679956520. Its totient is φ = 1590364160.

The previous prime is 3213172603. The next prime is 3213172649. The reversal of 3213172628 is 8262713123.

It can be written as a sum of positive squares in 4 ways, for example, as 682881424 + 2530291204 = 26132^2 + 50302^2 .

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, 394178 + ... + 402246.

It is an arithmetic number, because the mean of its divisors is an integer number (236664855).

Almost surely, 2^3213172628 is an apocalyptic number.

It is an amenable number.

3213172628 is a deficient number, since it is larger than the sum of its proper divisors (2466783892).

3213172628 is a wasteful number, since it uses less digits than its factorization.

3213172628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9067 (or 9065 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 3213172628 is about 56684.8536030570. The cubic root of 3213172628 is about 1475.6318469639.

The spelling of 3213172628 in words is "three billion, two hundred thirteen million, one hundred seventy-two thousand, six hundred twenty-eight".