47771472 has 120 divisors (see below), whose sum is σ = 151255200. Its totient is φ = 12918528.

The previous prime is 47771467. The next prime is 47771473. The reversal of 47771472 is 27417774.

It is a super-2 number, since 2×47771472² = 4564227074093568, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 47771472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47771473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44154 + ... + 45222.

It is an arithmetic number, because the mean of its divisors is an integer number (1260460).

Almost surely, 2^47771472 is an apocalyptic number.

47771472 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 47771472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75627600).

47771472 is an abundant number, since it is smaller than the sum of its proper divisors (103483728).

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

47771472 is a wasteful number, since it uses less digits than its factorization.

47771472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1100 counting only the distinct ones).

The product of its digits is 76832, while the sum is 39.

The square root of 47771472 is about 6911.6909653138. The cubic root of 47771472 is about 362.8464467528.

The spelling of 47771472 in words is "forty-seven million, seven hundred seventy-one thousand, four hundred seventy-two".