471992640 has 112 divisors (see below), whose sum is σ = 1712683392. Its totient is φ = 107882496.

The previous prime is 471992611. The next prime is 471992663. The reversal of 471992640 is 46299174.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 471992592 and 471992601.

It is a congruent number.

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, 28399 + ... + 41838.

It is an arithmetic number, because the mean of its divisors is an integer number (15291816).

Almost surely, 2^471992640 is an apocalyptic number.

471992640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

471992640 is an abundant number, since it is smaller than the sum of its proper divisors (1240690752).

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

471992640 is a wasteful number, since it uses less digits than its factorization.

471992640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70264 (or 70254 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 471992640 is about 21725.3915960104. The cubic root of 471992640 is about 778.5952361969.

The spelling of 471992640 in words is "four hundred seventy-one million, nine hundred ninety-two thousand, six hundred forty".