47257522728 has 128 divisors (see below), whose sum is σ = 131449113600. Its totient is φ = 14147198208.

The previous prime is 47257522717. The next prime is 47257522759. The reversal of 47257522728 is 82722575274.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1938825 + ... + 1963047.

It is an arithmetic number, because the mean of its divisors is an integer number (1026946200).

Almost surely, 2^47257522728 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 47257522728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65724556800).

47257522728 is an abundant number, since it is smaller than the sum of its proper divisors (84191590872).

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

47257522728 is a wasteful number, since it uses less digits than its factorization.

47257522728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24308 (or 24278 counting only the distinct ones).

The product of its digits is 4390400, while the sum is 51.

The spelling of 47257522728 in words is "forty-seven billion, two hundred fifty-seven million, five hundred twenty-two thousand, seven hundred twenty-eight".