472661730 has 112 divisors (see below), whose sum is σ = 1331536320. Its totient is φ = 120520224.

The previous prime is 472661729. The next prime is 472661737. The reversal of 472661730 is 37166274.

472661730 is a `hidden beast` number, since 4 + 7 + 2 + 6 + 617 + 30 = 666.

It is a super-2 number, since 2×472661730² = 446818222013185800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (472661737) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 166261 + ... + 169079.

Almost surely, 2^472661730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 472661730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665768160).

472661730 is an abundant number, since it is smaller than the sum of its proper divisors (858874590).

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

472661730 is a wasteful number, since it uses less digits than its factorization.

472661730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867 (or 2852 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 472661730 is about 21740.7849444311. The cubic root of 472661730 is about 778.9629709681.

The spelling of 472661730 in words is "four hundred seventy-two million, six hundred sixty-one thousand, seven hundred thirty".