3215299240 has 16 divisors (see below), whose sum is σ = 7234423380. Its totient is φ = 1286119680.

The previous prime is 3215299229. The next prime is 3215299249. The reversal of 3215299240 is 429925123.

It can be written as a sum of positive squares in 2 ways, for example, as 2590199236 + 625100004 = 50894^2 + 25002^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3215299240.

It is not an unprimeable number, because it can be changed into a prime (3215299249) 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 3 ways as a sum of consecutive naturals, for example, 40191201 + ... + 40191280.

Almost surely, 2^3215299240 is an apocalyptic number.

It is an amenable number.

3215299240 is an abundant number, since it is smaller than the sum of its proper divisors (4019124140).

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

3215299240 is a wasteful number, since it uses less digits than its factorization.

3215299240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80382492 (or 80382488 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 3215299240 is about 56703.6087035032. The cubic root of 3215299240 is about 1475.9573201232.

The spelling of 3215299240 in words is "three billion, two hundred fifteen million, two hundred ninety-nine thousand, two hundred forty".