247723252 has 24 divisors (see below), whose sum is σ = 524591424. Its totient is φ = 99921792.

The previous prime is 247723247. The next prime is 247723253. The reversal of 247723252 is 252327742.

It is a super-2 number, since 2×247723252² = 122733619162911008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247723253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259738 + ... + 260689.

It is an arithmetic number, because the mean of its divisors is an integer number (21857976).

Almost surely, 2^247723252 is an apocalyptic number.

It is an amenable number.

247723252 is an abundant number, since it is smaller than the sum of its proper divisors (276868172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247723252 is a wasteful number, since it uses less digits than its factorization.

247723252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520455 (or 520453 counting only the distinct ones).

The product of its digits is 47040, while the sum is 34.

The square root of 247723252 is about 15739.2265375399. The cubic root of 247723252 is about 628.0423416622.

The spelling of 247723252 in words is "two hundred forty-seven million, seven hundred twenty-three thousand, two hundred fifty-two".