247813473 has 8 divisors (see below), whose sum is σ = 341076736. Its totient is φ = 159879600.

The previous prime is 247813463. The next prime is 247813481. The reversal of 247813473 is 374318742.

247813473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 247813473 - 2¹⁸ = 247551329 is a prime.

It is a super-2 number, since 2×247813473² = 122823034800643458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247813453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1332238 + ... + 1332423.

It is an arithmetic number, because the mean of its divisors is an integer number (42634592).

Almost surely, 2^247813473 is an apocalyptic number.

It is an amenable number.

247813473 is a deficient number, since it is larger than the sum of its proper divisors (93263263).

247813473 is a wasteful number, since it uses less digits than its factorization.

247813473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664695.

The product of its digits is 112896, while the sum is 39.

The square root of 247813473 is about 15742.0923958666. The cubic root of 247813473 is about 628.1185769101.

It can be divided in two parts, 2478 and 13473, that added together give a palindrome (15951).

The spelling of 247813473 in words is "two hundred forty-seven million, eight hundred thirteen thousand, four hundred seventy-three".