3257197940 has 12 divisors (see below), whose sum is σ = 6840115716. Its totient is φ = 1302879168.

The previous prime is 3257197921. The next prime is 3257197991. The reversal of 3257197940 is 497917523.

It can be written as a sum of positive squares in 2 ways, for example, as 1415414884 + 1841783056 = 37622^2 + 42916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81429929 + ... + 81429968.

It is an arithmetic number, because the mean of its divisors is an integer number (570009643).

Almost surely, 2^3257197940 is an apocalyptic number.

It is an amenable number.

3257197940 is an abundant number, since it is smaller than the sum of its proper divisors (3582917776).

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

3257197940 is a wasteful number, since it uses less digits than its factorization.

3257197940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162859906 (or 162859904 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 3257197940 is about 57071.8664492410. The cubic root of 3257197940 is about 1482.3407596365.

The spelling of 3257197940 in words is "three billion, two hundred fifty-seven million, one hundred ninety-seven thousand, nine hundred forty".