3215845920 has 96 divisors (see below), whose sum is σ = 11577057408. Its totient is φ = 735049728.

The previous prime is 3215845907. The next prime is 3215845933. The reversal of 3215845920 is 295485123.

It is an interprime number because it is at equal distance from previous prime (3215845907) and next prime (3215845933).

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475189 + ... + 481908.

It is an arithmetic number, because the mean of its divisors is an integer number (120594348).

Almost surely, 2^3215845920 is an apocalyptic number.

3215845920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3215845920 is an abundant number, since it is smaller than the sum of its proper divisors (8361211488).

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

3215845920 is a wasteful number, since it uses less digits than its factorization.

3215845920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957122 (or 957114 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 3215845920 is about 56708.4290031032. The cubic root of 3215845920 is about 1476.0409650722.

The spelling of 3215845920 in words is "three billion, two hundred fifteen million, eight hundred forty-five thousand, nine hundred twenty".