3172479440 has 80 divisors (see below), whose sum is σ = 7985488896. Its totient is φ = 1165171200.

The previous prime is 3172479437. The next prime is 3172479467. The reversal of 3172479440 is 449742713.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 190655 + ... + 206625.

Almost surely, 2^3172479440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3172479440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3992744448).

3172479440 is an abundant number, since it is smaller than the sum of its proper divisors (4813009456).

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

3172479440 is a wasteful number, since it uses less digits than its factorization.

3172479440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16188 (or 16182 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 3172479440 is about 56324.7675538923. The cubic root of 3172479440 is about 1469.3759888678.

The spelling of 3172479440 in words is "three billion, one hundred seventy-two million, four hundred seventy-nine thousand, four hundred forty".