47724261 has 16 divisors (see below), whose sum is σ = 69470016. Its totient is φ = 28964736.

The previous prime is 47724251. The next prime is 47724263. The reversal of 47724261 is 16242774.

It is not a de Polignac number, because 47724261 - 2⁹ = 47723749 is a prime.

It is a super-2 number, since 2×47724261² = 4555210175992242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47724263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5535 + ... + 11228.

It is an arithmetic number, because the mean of its divisors is an integer number (4341876).

Almost surely, 2^47724261 is an apocalyptic number.

It is an amenable number.

47724261 is a deficient number, since it is larger than the sum of its proper divisors (21745755).

47724261 is a wasteful number, since it uses less digits than its factorization.

47724261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16852.

The product of its digits is 18816, while the sum is 33.

The square root of 47724261 is about 6908.2748208218. The cubic root of 47724261 is about 362.7268775546.

The spelling of 47724261 in words is "forty-seven million, seven hundred twenty-four thousand, two hundred sixty-one".