473381640 has 96 divisors (see below), whose sum is σ = 1559652120. Its totient is φ = 124498944.

The previous prime is 473381633. The next prime is 473381681. The reversal of 473381640 is 46183374.

473381640 is a `hidden beast` number, since 4 + 7 + 3 + 3 + 8 + 1 + 640 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 459587844 + 13793796 = 21438^2 + 3714^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 473381595 and 473381604.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17274 + ... + 35286.

Almost surely, 2^473381640 is an apocalyptic number.

473381640 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 473381640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (779826060).

473381640 is an abundant number, since it is smaller than the sum of its proper divisors (1086270480).

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

473381640 is a wasteful number, since it uses less digits than its factorization.

473381640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18103 (or 18096 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 473381640 is about 21757.3353147852. The cubic root of 473381640 is about 779.3582492600.

The spelling of 473381640 in words is "four hundred seventy-three million, three hundred eighty-one thousand, six hundred forty".