47221424 has 20 divisors (see below), whose sum is σ = 91757520. Its totient is φ = 23542080.

The previous prime is 47221409. The next prime is 47221429. The reversal of 47221424 is 42412274.

It is a junction number, because it is equal to n+sod(n) for n = 47221393 and 47221402.

It is not an unprimeable number, because it can be changed into a prime (47221429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1634 + ... + 9854.

It is an arithmetic number, because the mean of its divisors is an integer number (4587876).

Almost surely, 2^47221424 is an apocalyptic number.

It is an amenable number.

47221424 is a deficient number, since it is larger than the sum of its proper divisors (44536096).

47221424 is a wasteful number, since it uses less digits than its factorization.

47221424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8588 (or 8582 counting only the distinct ones).

The product of its digits is 3584, while the sum is 26.

The square root of 47221424 is about 6871.7846299197. The cubic root of 47221424 is about 361.4484442673.

Adding to 47221424 its reverse (42412274), we get a palindrome (89633698).

The spelling of 47221424 in words is "forty-seven million, two hundred twenty-one thousand, four hundred twenty-four".