3156220572 has 12 divisors (see below), whose sum is σ = 7364514696. Its totient is φ = 1052073520.

The previous prime is 3156220567. The next prime is 3156220579. The reversal of 3156220572 is 2750226513.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3156220579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131509179 + ... + 131509202.

It is an arithmetic number, because the mean of its divisors is an integer number (613709558).

Almost surely, 2^3156220572 is an apocalyptic number.

It is an amenable number.

3156220572 is an abundant number, since it is smaller than the sum of its proper divisors (4208294124).

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

3156220572 is a wasteful number, since it uses less digits than its factorization.

3156220572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263018388 (or 263018386 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 3156220572 is about 56180.2507292376. The cubic root of 3156220572 is about 1466.8615182123.

The spelling of 3156220572 in words is "three billion, one hundred fifty-six million, two hundred twenty thousand, five hundred seventy-two".