3172267640 has 32 divisors (see below), whose sum is σ = 7447934880. Its totient is φ = 1213736832.

The previous prime is 3172267639. The next prime is 3172267661. The reversal of 3172267640 is 467622713.

It is a junction number, because it is equal to n+sod(n) for n = 3172267594 and 3172267603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1723139 + ... + 1724978.

It is an arithmetic number, because the mean of its divisors is an integer number (232747965).

Almost surely, 2^3172267640 is an apocalyptic number.

It is an amenable number.

3172267640 is an abundant number, since it is smaller than the sum of its proper divisors (4275667240).

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

3172267640 is a wasteful number, since it uses less digits than its factorization.

3172267640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448151 (or 3448147 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 3172267640 is about 56322.8873549643. The cubic root of 3172267640 is about 1469.3432888124.

The spelling of 3172267640 in words is "three billion, one hundred seventy-two million, two hundred sixty-seven thousand, six hundred forty".