477881856 has 240 divisors, whose sum is σ = 1501403904. Its totient is φ = 151455744.

The previous prime is 477881813. The next prime is 477881857. The reversal of 477881856 is 658188774.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (477881857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2861485 + ... + 2861651.

Almost surely, 2^477881856 is an apocalyptic number.

477881856 is a gapful number since it is divisible by the number (46) 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 477881856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (750701952).

477881856 is an abundant number, since it is smaller than the sum of its proper divisors (1023522048).

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

477881856 is an equidigital number, since it uses as much as digits as its factorization.

477881856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 195 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 54.

The square root of 477881856 is about 21860.5090517124. The cubic root of 477881856 is about 781.8201281299.

The spelling of 477881856 in words is "four hundred seventy-seven million, eight hundred eighty-one thousand, eight hundred fifty-six".