478328727492 has 240 divisors, whose sum is σ = 1570908810240. Its totient is φ = 123291979200.

The previous prime is 478328727451. The next prime is 478328727523. The reversal of 478328727492 is 294727823874.

It is a happy number.

478328727492 is a `hidden beast` number, since 4 + 7 + 83 + 287 + 274 + 9 + 2 = 666.

It is a super-2 number, since 2×478328727492² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3195009 + ... + 3341367.

It is an arithmetic number, because the mean of its divisors is an integer number (6545453376).

Almost surely, 2^478328727492 is an apocalyptic number.

478328727492 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 478328727492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (785454405120).

478328727492 is an abundant number, since it is smaller than the sum of its proper divisors (1092580082748).

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

478328727492 is a wasteful number, since it uses less digits than its factorization.

478328727492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146524 (or 146513 counting only the distinct ones).

The product of its digits is 75866112, while the sum is 63.

The spelling of 478328727492 in words is "four hundred seventy-eight billion, three hundred twenty-eight million, seven hundred twenty-seven thousand, four hundred ninety-two".