242778768 has 40 divisors (see below), whose sum is σ = 664073568. Its totient is φ = 76165632.

The previous prime is 242778761. The next prime is 242778769. The reversal of 242778768 is 867877242.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 242778768.

It is not an unprimeable number, because it can be changed into a prime (242778761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147946 + ... + 149577.

Almost surely, 2^242778768 is an apocalyptic number.

It is an amenable number.

242778768 is an abundant number, since it is smaller than the sum of its proper divisors (421294800).

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

242778768 is a wasteful number, since it uses less digits than its factorization.

242778768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297551 (or 297545 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 51.

The square root of 242778768 is about 15581.3596325866. The cubic root of 242778768 is about 623.8357144762.

The spelling of 242778768 in words is "two hundred forty-two million, seven hundred seventy-eight thousand, seven hundred sixty-eight".