478321172 has 24 divisors (see below), whose sum is σ = 957552960. Its totient is φ = 204799680.

The previous prime is 478321171. The next prime is 478321199. The reversal of 478321172 is 271123874.

It is a super-2 number, since 2×478321172² = 457582287166907168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478321171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24047 + ... + 39177.

It is an arithmetic number, because the mean of its divisors is an integer number (39898040).

Almost surely, 2^478321172 is an apocalyptic number.

It is an amenable number.

478321172 is an abundant number, since it is smaller than the sum of its proper divisors (479231788).

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

478321172 is a wasteful number, since it uses less digits than its factorization.

478321172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16271 (or 16269 counting only the distinct ones).

The product of its digits is 18816, while the sum is 35.

The square root of 478321172 is about 21870.5549083694. The cubic root of 478321172 is about 782.0596300707.

The spelling of 478321172 in words is "four hundred seventy-eight million, three hundred twenty-one thousand, one hundred seventy-two".