47721256 has 32 divisors (see below), whose sum is σ = 98496000. Its totient is φ = 21495040.

The previous prime is 47721241. The next prime is 47721257. The reversal of 47721256 is 65212774.

It is not an unprimeable number, because it can be changed into a prime (47721257) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7545 + ... + 12343.

It is an arithmetic number, because the mean of its divisors is an integer number (3078000).

Almost surely, 2^47721256 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 47721256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49248000).

47721256 is an abundant number, since it is smaller than the sum of its proper divisors (50774744).

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

47721256 is a wasteful number, since it uses less digits than its factorization.

47721256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929 (or 4925 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 47721256 is about 6908.0573246029. The cubic root of 47721256 is about 362.7192642560.

The spelling of 47721256 in words is "forty-seven million, seven hundred twenty-one thousand, two hundred fifty-six".