425338728 has 16 divisors (see below), whose sum is σ = 1063346880. Its totient is φ = 141779568.

The previous prime is 425338723. The next prime is 425338789. The reversal of 425338728 is 827833524.

It is a self number, because there is not a number n which added to its sum of digits gives 425338728.

It is not an unprimeable number, because it can be changed into a prime (425338723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8861200 + ... + 8861247.

It is an arithmetic number, because the mean of its divisors is an integer number (66459180).

Almost surely, 2^425338728 is an apocalyptic number.

It is an amenable number.

425338728 is an abundant number, since it is smaller than the sum of its proper divisors (638008152).

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

425338728 is a wasteful number, since it uses less digits than its factorization.

425338728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17722456 (or 17722452 counting only the distinct ones).

The product of its digits is 322560, while the sum is 42.

The square root of 425338728 is about 20623.7418525349. The cubic root of 425338728 is about 752.0469875951.

The spelling of 425338728 in words is "four hundred twenty-five million, three hundred thirty-eight thousand, seven hundred twenty-eight".