247722873 has 4 divisors (see below), whose sum is σ = 330297168.
Its totient is φ = 165148580.
The previous prime is 247722863. The next prime is 247722941. The reversal of 247722873 is 378227742.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 247722873 - 217 = 247591801 is a prime.
It is a super-2 number, since 2×2477228732 = 122733243614748258, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (247722803) 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, 41287143 + ... + 41287148.
It is an arithmetic number, because the mean of its divisors is an integer number (82574292).
Almost surely, 2247722873 is an apocalyptic number.
It is an amenable number.
247722873 is a deficient number, since it is larger than the sum of its proper divisors (82574295).
247722873 is an equidigital number, since it uses as much as digits as its factorization.
247722873 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 82574294.
The product of its digits is 263424, while the sum is 42.
The square root of 247722873 is about 15739.2144975536.
The cubic root of 247722873 is about 628.0420213744.
The spelling of 247722873 in words is "two hundred forty-seven million, seven hundred twenty-two thousand, eight hundred seventy-three".