472022640 has 120 divisors (see below), whose sum is σ = 1643988528. Its totient is φ = 125867520.

The previous prime is 472022633. The next prime is 472022641. The reversal of 472022640 is 46220274.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472022641) 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, 7300 + ... + 31580.

Almost surely, 2^472022640 is an apocalyptic number.

472022640 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 472022640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821994264).

472022640 is an abundant number, since it is smaller than the sum of its proper divisors (1171965888).

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

472022640 is a wasteful number, since it uses less digits than its factorization.

472022640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24309 (or 24291 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 472022640 is about 21726.0820213862. The cubic root of 472022640 is about 778.6117317664.

The spelling of 472022640 in words is "four hundred seventy-two million, twenty-two thousand, six hundred forty".