247212768 has 48 divisors (see below), whose sum is σ = 707930496. Its totient is φ = 74912640.

The previous prime is 247212731. The next prime is 247212811. The reversal of 247212768 is 867212742.

247212768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×247212768² = 122228305324443648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115996 + ... + 118107.

It is an arithmetic number, because the mean of its divisors is an integer number (14748552).

Almost surely, 2^247212768 is an apocalyptic number.

It is an amenable number.

247212768 is an abundant number, since it is smaller than the sum of its proper divisors (460717728).

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

247212768 is a wasteful number, since it uses less digits than its factorization.

247212768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234127 (or 234119 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 247212768 is about 15723.0012402213. The cubic root of 247212768 is about 627.6106421199.

Subtracting from 247212768 its sum of digits (39), we obtain a square (247212729 = 15723²).

The spelling of 247212768 in words is "two hundred forty-seven million, two hundred twelve thousand, seven hundred sixty-eight".