247779248 has 20 divisors (see below), whose sum is σ = 496627440. Its totient is φ = 119617344.

The previous prime is 247779241. The next prime is 247779271. The reversal of 247779248 is 842977742.

247779248 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247779248² = 122789111478891008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247779196 and 247779205.

It is not an unprimeable number, because it can be changed into a prime (247779241) 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, 266540 + ... + 267467.

It is an arithmetic number, because the mean of its divisors is an integer number (24831372).

Almost surely, 2^247779248 is an apocalyptic number.

It is an amenable number.

247779248 is an abundant number, since it is smaller than the sum of its proper divisors (248848192).

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

247779248 is a wasteful number, since it uses less digits than its factorization.

247779248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534044 (or 534038 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 50.

The square root of 247779248 is about 15741.0053046176. The cubic root of 247779248 is about 628.0896595316.

The spelling of 247779248 in words is "two hundred forty-seven million, seven hundred seventy-nine thousand, two hundred forty-eight".