3457739856 has 80 divisors (see below), whose sum is σ = 9053795520. Its totient is φ = 1137024000.

The previous prime is 3457739821. The next prime is 3457739881. The reversal of 3457739856 is 6589377543.

It is a junction number, because it is equal to n+sod(n) for n = 3457739796 and 3457739805.

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, 1311916 + ... + 1314548.

It is an arithmetic number, because the mean of its divisors is an integer number (113172444).

Almost surely, 2^3457739856 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 3457739856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4526897760).

3457739856 is an abundant number, since it is smaller than the sum of its proper divisors (5596055664).

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

3457739856 is a wasteful number, since it uses less digits than its factorization.

3457739856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004 (or 2998 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 57.

The square root of 3457739856 is about 58802.5497406362. The cubic root of 3457739856 is about 1512.1589304118.

The spelling of 3457739856 in words is "three billion, four hundred fifty-seven million, seven hundred thirty-nine thousand, eight hundred fifty-six".