478657146 has 16 divisors (see below), whose sum is σ = 1044343008. Its totient is φ = 145047600.

The previous prime is 478657141. The next prime is 478657159. The reversal of 478657146 is 641756874.

It is a super-2 number, since 2×478657146² = 458225326833730632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 478657095 and 478657104.

It is not an unprimeable number, because it can be changed into a prime (478657141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3626125 + ... + 3626256.

It is an arithmetic number, because the mean of its divisors is an integer number (65271438).

Almost surely, 2^478657146 is an apocalyptic number.

478657146 is an abundant number, since it is smaller than the sum of its proper divisors (565685862).

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

478657146 is a wasteful number, since it uses less digits than its factorization.

478657146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7252397.

The product of its digits is 1128960, while the sum is 48.

The square root of 478657146 is about 21878.2345265791. The cubic root of 478657146 is about 782.2426941027.

The spelling of 478657146 in words is "four hundred seventy-eight million, six hundred fifty-seven thousand, one hundred forty-six".