47724317 has 8 divisors (see below), whose sum is σ = 48854016. Its totient is φ = 46599472.

The previous prime is 47724293. The next prime is 47724319. The reversal of 47724317 is 71342774.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47724317 - 2²⁴ = 30947101 is a prime.

It is a super-2 number, since 2×47724317² = 4555220866232978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47724319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25268 + ... + 27090.

It is an arithmetic number, because the mean of its divisors is an integer number (6106752).

Almost surely, 2^47724317 is an apocalyptic number.

47724317 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

47724317 is a deficient number, since it is larger than the sum of its proper divisors (1129699).

47724317 is a wasteful number, since it uses less digits than its factorization.

47724317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427.

The product of its digits is 32928, while the sum is 35.

The square root of 47724317 is about 6908.2788739309. The cubic root of 47724317 is about 362.7270194300.

The spelling of 47724317 in words is "forty-seven million, seven hundred twenty-four thousand, three hundred seventeen".