3215373640 has 16 divisors (see below), whose sum is σ = 7234590780. Its totient is φ = 1286149440.

The previous prime is 3215373613. The next prime is 3215373641. The reversal of 3215373640 is 463735123.

It can be written as a sum of positive squares in 2 ways, for example, as 3207409956 + 7963684 = 56634^2 + 2822^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3215373596 and 3215373605.

It is not an unprimeable number, because it can be changed into a prime (3215373641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40192131 + ... + 40192210.

Almost surely, 2^3215373640 is an apocalyptic number.

It is an amenable number.

3215373640 is an abundant number, since it is smaller than the sum of its proper divisors (4019217140).

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

3215373640 is a wasteful number, since it uses less digits than its factorization.

3215373640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80384352 (or 80384348 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 34.

The square root of 3215373640 is about 56704.2647426100. The cubic root of 3215373640 is about 1475.9687042764.

The spelling of 3215373640 in words is "three billion, two hundred fifteen million, three hundred seventy-three thousand, six hundred forty".