457302728 has 8 divisors (see below), whose sum is σ = 857442630. Its totient is φ = 228651360.

The previous prime is 457302719. The next prime is 457302739. The reversal of 457302728 is 827203754.

It can be written as a sum of positive squares in only one way, i.e., 412171204 + 45131524 = 20302^2 + 6718^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 457302691 and 457302700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28581413 + ... + 28581428.

Almost surely, 2^457302728 is an apocalyptic number.

It is an amenable number.

457302728 is a deficient number, since it is larger than the sum of its proper divisors (400139902).

457302728 is a wasteful number, since it uses less digits than its factorization.

457302728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57162847 (or 57162843 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 457302728 is about 21384.6376635191. The cubic root of 457302728 is about 770.4325045315.

The spelling of 457302728 in words is "four hundred fifty-seven million, three hundred two thousand, seven hundred twenty-eight".