47215872 has 252 divisors, whose sum is σ = 160854624. Its totient is φ = 13685760.

The previous prime is 47215867. The next prime is 47215873. The reversal of 47215872 is 27851274.

47215872 is a `hidden beast` number, since 4 + 72 + 1 + 587 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47215873) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2052853 + ... + 2052875.

It is an arithmetic number, because the mean of its divisors is an integer number (638312).

Almost surely, 2^47215872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47215872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80427312).

47215872 is an abundant number, since it is smaller than the sum of its proper divisors (113638752).

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

47215872 is an equidigital number, since it uses as much as digits as its factorization.

47215872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 39 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 47215872 is about 6871.3806472935. The cubic root of 47215872 is about 361.4342780955.

The spelling of 47215872 in words is "forty-seven million, two hundred fifteen thousand, eight hundred seventy-two".