47897472 has 128 divisors (see below), whose sum is σ = 147663360. Its totient is φ = 13473792.

The previous prime is 47897459. The next prime is 47897489. The reversal of 47897472 is 27479874.

47897472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

Its product of digits (790272) is a multiple of the sum of its prime divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276778 + ... + 276950.

It is an arithmetic number, because the mean of its divisors is an integer number (1153620).

Almost surely, 2^47897472 is an apocalyptic number.

47897472 is a gapful number since it is divisible by the number (42) 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 47897472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73831680).

47897472 is an abundant number, since it is smaller than the sum of its proper divisors (99765888).

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

47897472 is a wasteful number, since it uses less digits than its factorization.

47897472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 288 counting only the distinct ones).

The product of its digits is 790272, while the sum is 48.

The square root of 47897472 is about 6920.7999537626. The cubic root of 47897472 is about 363.1651761394.

The spelling of 47897472 in words is "forty-seven million, eight hundred ninety-seven thousand, four hundred seventy-two".