478302728 has 16 divisors (see below), whose sum is σ = 897157500. Its totient is φ = 239060736.

The previous prime is 478302707. The next prime is 478302763. The reversal of 478302728 is 827203874.

It can be written as a sum of positive squares in 2 ways, for example, as 468203044 + 10099684 = 21638^2 + 3178^2 .

It is a super-2 number, since 2×478302728² = 457546999224483968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14588 + ... + 34196.

Almost surely, 2^478302728 is an apocalyptic number.

It is an amenable number.

478302728 is a deficient number, since it is larger than the sum of its proper divisors (418854772).

478302728 is a wasteful number, since it uses less digits than its factorization.

478302728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22664 (or 22660 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 478302728 is about 21870.1332414780. The cubic root of 478302728 is about 782.0495779034.

The spelling of 478302728 in words is "four hundred seventy-eight million, three hundred two thousand, seven hundred twenty-eight".