3213845272 has 32 divisors (see below), whose sum is σ = 6598817280. Its totient is φ = 1455273760.

The previous prime is 3213845263. The next prime is 3213845287. The reversal of 3213845272 is 2725483123.

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, 46288 + ... + 92575.

It is an arithmetic number, because the mean of its divisors is an integer number (206213040).

Almost surely, 2^3213845272 is an apocalyptic number.

3213845272 is the 46288-th pentagonal number.

3213845272 is the 30303-rd centered heptagonal number.

It is an amenable number.

3213845272 is an abundant number, since it is smaller than the sum of its proper divisors (3384972008).

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

3213845272 is a wasteful number, since it uses less digits than its factorization.

3213845272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139143 (or 139139 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 3213845272 is about 56690.7864824612. The cubic root of 3213845272 is about 1475.7348091313.

The spelling of 3213845272 in words is "three billion, two hundred thirteen million, eight hundred forty-five thousand, two hundred seventy-two".