470656138 has 16 divisors (see below), whose sum is σ = 748145160. Its totient is φ = 221670400.

The previous prime is 470656133. The next prime is 470656139. The reversal of 470656138 is 831656074.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 184606569 + 286049569 = 13587^2 + 16913^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 470656138.

It is not an unprimeable number, because it can be changed into a prime (470656133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96583 + ... + 101338.

Almost surely, 2^470656138 is an apocalyptic number.

470656138 is a deficient number, since it is larger than the sum of its proper divisors (277489022).

470656138 is a wasteful number, since it uses less digits than its factorization.

470656138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197993.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 470656138 is about 21694.6108054512. The cubic root of 470656138 is about 777.8596471659.

The spelling of 470656138 in words is "four hundred seventy million, six hundred fifty-six thousand, one hundred thirty-eight".