47666672 has 20 divisors (see below), whose sum is σ = 96370320. Its totient is φ = 22796928.

The previous prime is 47666639. The next prime is 47666699. The reversal of 47666672 is 27666674.

It is a happy number.

It is a super-2 number, since 2×47666672² = 4544223239111168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64397 + ... + 65132.

It is an arithmetic number, because the mean of its divisors is an integer number (4818516).

Almost surely, 2^47666672 is an apocalyptic number.

It is an amenable number.

47666672 is an abundant number, since it is smaller than the sum of its proper divisors (48703648).

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

47666672 is a wasteful number, since it uses less digits than its factorization.

47666672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129560 (or 129554 counting only the distinct ones).

The product of its digits is 508032, while the sum is 44.

The square root of 47666672 is about 6904.1054453130. The cubic root of 47666672 is about 362.5809176476.

The spelling of 47666672 in words is "forty-seven million, six hundred sixty-six thousand, six hundred seventy-two".