47065728 has 96 divisors (see below), whose sum is σ = 132265440. Its totient is φ = 14800896.

The previous prime is 47065699. The next prime is 47065729. The reversal of 47065728 is 82756074.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47065729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 644700 + ... + 644772.

It is an arithmetic number, because the mean of its divisors is an integer number (1377765).

Almost surely, 2^47065728 is an apocalyptic number.

47065728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47065728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66132720).

47065728 is an abundant number, since it is smaller than the sum of its proper divisors (85199712).

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

47065728 is an equidigital number, since it uses as much as digits as its factorization.

47065728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 47065728 is about 6860.4466326909. The cubic root of 47065728 is about 361.0507572577.

The spelling of 47065728 in words is "forty-seven million, sixty-five thousand, seven hundred twenty-eight".