247023847 has 6 divisors (see below), whose sum is σ = 287354328. Its totient is φ = 211734684.

The previous prime is 247023823. The next prime is 247023851. The reversal of 247023847 is 748320742.

It is not a de Polignac number, because 247023847 - 2²⁷ = 112806119 is a prime.

It is a super-2 number, since 2×247023847² = 122041561973358818, 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 (247020847) 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, 2520603 + ... + 2520700.

It is an arithmetic number, because the mean of its divisors is an integer number (47892388).

Almost surely, 2^247023847 is an apocalyptic number.

247023847 is a deficient number, since it is larger than the sum of its proper divisors (40330481).

247023847 is an equidigital number, since it uses as much as digits as its factorization.

247023847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041317 (or 5041310 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 247023847 is about 15716.9923013279. The cubic root of 247023847 is about 627.4507271777.

The spelling of 247023847 in words is "two hundred forty-seven million, twenty-three thousand, eight hundred forty-seven".