673857928 has 8 divisors (see below), whose sum is σ = 1263483630. Its totient is φ = 336928960.

The previous prime is 673857869. The next prime is 673857937. The reversal of 673857928 is 829758376.

It can be written as a sum of positive squares in only one way, i.e., 637158564 + 36699364 = 25242^2 + 6058^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42116113 + ... + 42116128.

Almost surely, 2^673857928 is an apocalyptic number.

It is an amenable number.

673857928 is a deficient number, since it is larger than the sum of its proper divisors (589625702).

673857928 is a wasteful number, since it uses less digits than its factorization.

673857928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84232247 (or 84232243 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 55.

The square root of 673857928 is about 25958.7736228043. The cubic root of 673857928 is about 876.7103105074.

The spelling of 673857928 in words is "six hundred seventy-three million, eight hundred fifty-seven thousand, nine hundred twenty-eight".