478492812 has 192 divisors, whose sum is σ = 1550868480. Its totient is φ = 124416000.

The previous prime is 478492811. The next prime is 478492813. The reversal of 478492812 is 218294874.

It is an interprime number because it is at equal distance from previous prime (478492811) and next prime (478492813).

It is a super-2 number, since 2×478492812² = 457910742271334688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (478492811) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 397812 + ... + 399012.

It is an arithmetic number, because the mean of its divisors is an integer number (8077440).

Almost surely, 2^478492812 is an apocalyptic number.

478492812 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478492812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (775434240).

478492812 is an abundant number, since it is smaller than the sum of its proper divisors (1072375668).

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

478492812 is a wasteful number, since it uses less digits than its factorization.

478492812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269 (or 1261 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 478492812 is about 21874.4785537850. The cubic root of 478492812 is about 782.1531632237.

The spelling of 478492812 in words is "four hundred seventy-eight million, four hundred ninety-two thousand, eight hundred twelve".