47972770 has 8 divisors (see below), whose sum is σ = 86351004. Its totient is φ = 19189104.

The previous prime is 47972761. The next prime is 47972773. The reversal of 47972770 is 7727974.

It can be written as a sum of positive squares in 2 ways, for example, as 47210641 + 762129 = 6871^2 + 873^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×47972770² = 4602773322945800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47972773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2398629 + ... + 2398648.

Almost surely, 2^47972770 is an apocalyptic number.

47972770 is a deficient number, since it is larger than the sum of its proper divisors (38378234).

47972770 is a wasteful number, since it uses less digits than its factorization.

47972770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797284.

The product of its (nonzero) digits is 172872, while the sum is 43.

The square root of 47972770 is about 6926.2377955135. The cubic root of 47972770 is about 363.3553830758.

The spelling of 47972770 in words is "forty-seven million, nine hundred seventy-two thousand, seven hundred seventy".