3457128528 has 240 divisors, whose sum is σ = 11822743296. Its totient is φ = 921507840.

The previous prime is 3457128503. The next prime is 3457128529. The reversal of 3457128528 is 8258217543.

3457128528 is a `hidden beast` number, since 3 + 4 + 571 + 28 + 52 + 8 = 666.

It is a super-2 number, since 2×3457128528² = 23903475318222893568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3457128529) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 948726 + ... + 952362.

Almost surely, 2^3457128528 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 3457128528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5911371648).

3457128528 is an abundant number, since it is smaller than the sum of its proper divisors (8365614768).

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

3457128528 is a wasteful number, since it uses less digits than its factorization.

3457128528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722 (or 3713 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 3457128528 is about 58797.3513689180. The cubic root of 3457128528 is about 1512.0698086523.

The spelling of 3457128528 in words is "three billion, four hundred fifty-seven million, one hundred twenty-eight thousand, five hundred twenty-eight".