247904241 has 24 divisors (see below), whose sum is σ = 369490176. Its totient is φ = 147625920.

The previous prime is 247904233. The next prime is 247904257. The reversal of 247904241 is 142409742.

It is not a de Polignac number, because 247904241 - 2³ = 247904233 is a prime.

It is a super-2 number, since 2×247904241² = 122913025411572162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247904231) 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, 7831 + ... + 23603.

It is an arithmetic number, because the mean of its divisors is an integer number (15395424).

Almost surely, 2^247904241 is an apocalyptic number.

It is an amenable number.

247904241 is a deficient number, since it is larger than the sum of its proper divisors (121585935).

247904241 is a wasteful number, since it uses less digits than its factorization.

247904241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15833 (or 15820 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 247904241 is about 15744.9751031877. The cubic root of 247904241 is about 628.1952556945.

The spelling of 247904241 in words is "two hundred forty-seven million, nine hundred four thousand, two hundred forty-one".