247424013 has 6 divisors (see below), whose sum is σ = 357390254. Its totient is φ = 164949336.

The previous prime is 247423999. The next prime is 247424029. The reversal of 247424013 is 310424742.

It can be written as a sum of positive squares in only one way, i.e., 145878084 + 101545929 = 12078^2 + 10077^2 .

It is not a de Polignac number, because 247424013 - 2¹⁸ = 247161869 is a prime.

It is a super-2 number, since 2×247424013² = 122437284418048338, 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 (247422013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13745770 + ... + 13745787.

Almost surely, 2^247424013 is an apocalyptic number.

It is an amenable number.

247424013 is a deficient number, since it is larger than the sum of its proper divisors (109966241).

247424013 is a wasteful number, since it uses less digits than its factorization.

247424013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27491563 (or 27491560 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 247424013 is about 15729.7175117673. The cubic root of 247424013 is about 627.7893570864.

Adding to 247424013 its reverse (310424742), we get a palindrome (557848755).

The spelling of 247424013 in words is "two hundred forty-seven million, four hundred twenty-four thousand, thirteen".