3215472729 has 16 divisors (see below), whose sum is σ = 4945563648. Its totient is φ = 1820239632.

The previous prime is 3215472727. The next prime is 3215472731. The reversal of 3215472729 is 9272745123.

It is an interprime number because it is at equal distance from previous prime (3215472727) and next prime (3215472731).

It is not a de Polignac number, because 3215472729 - 2¹ = 3215472727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3215472727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 713257 + ... + 717750.

It is an arithmetic number, because the mean of its divisors is an integer number (309097728).

Almost surely, 2^3215472729 is an apocalyptic number.

It is an amenable number.

3215472729 is a deficient number, since it is larger than the sum of its proper divisors (1730090919).

3215472729 is a wasteful number, since it uses less digits than its factorization.

3215472729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431124.

The product of its digits is 211680, while the sum is 42.

The square root of 3215472729 is about 56705.1384708652. The cubic root of 3215472729 is about 1475.9838658903.

The spelling of 3215472729 in words is "three billion, two hundred fifteen million, four hundred seventy-two thousand, seven hundred twenty-nine".