475447720 has 96 divisors (see below), whose sum is σ = 1227260160. Its totient is φ = 165334400.

The previous prime is 475447717. The next prime is 475447729. The reversal of 475447720 is 27744574.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (475447729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109185 + ... + 113455.

It is an arithmetic number, because the mean of its divisors is an integer number (12783960).

Almost surely, 2^475447720 is an apocalyptic number.

475447720 is a gapful number since it is divisible by the number (40) 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 475447720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613630080).

475447720 is an abundant number, since it is smaller than the sum of its proper divisors (751812440).

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

475447720 is a wasteful number, since it uses less digits than its factorization.

475447720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4327 (or 4312 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 40.

The square root of 475447720 is about 21804.7636997056. The cubic root of 475447720 is about 780.4904432561.

The spelling of 475447720 in words is "four hundred seventy-five million, four hundred forty-seven thousand, seven hundred twenty".