470217640 has 16 divisors (see below), whose sum is σ = 1057989780. Its totient is φ = 188087040.

The previous prime is 470217623. The next prime is 470217647. The reversal of 470217640 is 46712074.

It can be written as a sum of positive squares in 2 ways, for example, as 460445764 + 9771876 = 21458^2 + 3126^2 .

It is a super-2 number, since 2×470217640² = 442209257934339200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (470217647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5877681 + ... + 5877760.

Almost surely, 2^470217640 is an apocalyptic number.

470217640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

470217640 is an abundant number, since it is smaller than the sum of its proper divisors (587772140).

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

470217640 is a wasteful number, since it uses less digits than its factorization.

470217640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11755452 (or 11755448 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 470217640 is about 21684.5023000299. The cubic root of 470217640 is about 777.6180016169.

The spelling of 470217640 in words is "four hundred seventy million, two hundred seventeen thousand, six hundred forty".