47991712 has 24 divisors (see below), whose sum is σ = 96269796. Its totient is φ = 23542272.

The previous prime is 47991707. The next prime is 47991763. The reversal of 47991712 is 21719974.

It can be written as a sum of positive squares in 2 ways, for example, as 47279376 + 712336 = 6876^2 + 844^2 .

It is a super-4 number, since 4×47991712⁴ (a number of 32 digits) contains 4444 as substring.

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, 12453 + ... + 15844.

Almost surely, 2^47991712 is an apocalyptic number.

It is an amenable number.

47991712 is an abundant number, since it is smaller than the sum of its proper divisors (48278084).

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

47991712 is a wasteful number, since it uses less digits than its factorization.

47991712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28360 (or 28352 counting only the distinct ones).

The product of its digits is 31752, while the sum is 40.

The square root of 47991712 is about 6927.6050695749. The cubic root of 47991712 is about 363.4032002854.

The spelling of 47991712 in words is "forty-seven million, nine hundred ninety-one thousand, seven hundred twelve".