247413287 has 4 divisors (see below), whose sum is σ = 269905416. Its totient is φ = 224921160.

The previous prime is 247413259. The next prime is 247413347. The reversal of 247413287 is 782314742.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 247413287 - 2⁸ = 247413031 is a prime.

It is a super-2 number, since 2×247413287² = 122426669168288738, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247413287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247413247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11246048 + ... + 11246069.

It is an arithmetic number, because the mean of its divisors is an integer number (67476354).

Almost surely, 2^247413287 is an apocalyptic number.

247413287 is a deficient number, since it is larger than the sum of its proper divisors (22492129).

247413287 is a wasteful number, since it uses less digits than its factorization.

247413287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22492128.

The product of its digits is 75264, while the sum is 38.

The square root of 247413287 is about 15729.3765610720. The cubic root of 247413287 is about 627.7802852561.

The spelling of 247413287 in words is "two hundred forty-seven million, four hundred thirteen thousand, two hundred eighty-seven".