47217472 has 14 divisors (see below), whose sum is σ = 93697298. Its totient is φ = 23608704.

The previous prime is 47217427. The next prime is 47217491. The reversal of 47217472 is 27471274.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27290176 + 19927296 = 5224^2 + 4464^2 .

It is a congruent 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 as a sum of consecutive naturals, namely, 368823 + ... + 368950.

Almost surely, 2^47217472 is an apocalyptic number.

It is an amenable number.

47217472 is a deficient number, since it is larger than the sum of its proper divisors (46479826).

47217472 is an equidigital number, since it uses as much as digits as its factorization.

47217472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737785 (or 737775 counting only the distinct ones).

The product of its digits is 21952, while the sum is 34.

The square root of 47217472 is about 6871.4970712356. The cubic root of 47217472 is about 361.4383606796.

The spelling of 47217472 in words is "forty-seven million, two hundred seventeen thousand, four hundred seventy-two".