478249530 has 32 divisors (see below), whose sum is σ = 1252145088. Its totient is φ = 115939200.

The previous prime is 478249529. The next prime is 478249537. The reversal of 478249530 is 35942874.

It is a super-2 number, since 2×478249530² = 457445225890441800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (478249537) 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 15 ways as a sum of consecutive naturals, for example, 724291 + ... + 724950.

It is an arithmetic number, because the mean of its divisors is an integer number (39129534).

Almost surely, 2^478249530 is an apocalyptic number.

478249530 is an abundant number, since it is smaller than the sum of its proper divisors (773895558).

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

478249530 is a wasteful number, since it uses less digits than its factorization.

478249530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449262.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 478249530 is about 21868.9169827863. The cubic root of 478249530 is about 782.0205830058.

The spelling of 478249530 in words is "four hundred seventy-eight million, two hundred forty-nine thousand, five hundred thirty".