674809928 has 64 divisors (see below), whose sum is σ = 1446144000. Its totient is φ = 292626432.

The previous prime is 674809913. The next prime is 674809943. The reversal of 674809928 is 829908476.

It is an interprime number because it is at equal distance from previous prime (674809913) and next prime (674809943).

It is a self number, because there is not a number n which added to its sum of digits gives 674809928.

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, 249608 + ... + 252296.

It is an arithmetic number, because the mean of its divisors is an integer number (22596000).

Almost surely, 2^674809928 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 674809928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (723072000).

674809928 is an abundant number, since it is smaller than the sum of its proper divisors (771334072).

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

674809928 is a wasteful number, since it uses less digits than its factorization.

674809928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854 (or 2850 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 674809928 is about 25977.1039186434. The cubic root of 674809928 is about 877.1229768603.

The spelling of 674809928 in words is "six hundred seventy-four million, eight hundred nine thousand, nine hundred twenty-eight".