473438640 has 80 divisors (see below), whose sum is σ = 1485404928. Its totient is φ = 124723968.

The previous prime is 473438639. The next prime is 473438657. The reversal of 473438640 is 46834374.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8037 + ... + 31803.

Almost surely, 2^473438640 is an apocalyptic number.

473438640 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 473438640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (742702464).

473438640 is an abundant number, since it is smaller than the sum of its proper divisors (1011966288).

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

473438640 is a wasteful number, since it uses less digits than its factorization.

473438640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23866 (or 23860 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 39.

The square root of 473438640 is about 21758.6451784113. The cubic root of 473438640 is about 779.3895289109.

The spelling of 473438640 in words is "four hundred seventy-three million, four hundred thirty-eight thousand, six hundred forty".