242788860 has 48 divisors (see below), whose sum is σ = 755344800. Its totient is φ = 64743552.

The previous prime is 242788837. The next prime is 242788873. The reversal of 242788860 is 68887242.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 224265 + ... + 225344.

It is an arithmetic number, because the mean of its divisors is an integer number (15736350).

Almost surely, 2^242788860 is an apocalyptic number.

242788860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242788860 is an abundant number, since it is smaller than the sum of its proper divisors (512555940).

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

242788860 is a wasteful number, since it uses less digits than its factorization.

242788860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449627 (or 449619 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 242788860 is about 15581.6834777247. The cubic root of 242788860 is about 623.8443583716.

The spelling of 242788860 in words is "two hundred forty-two million, seven hundred eighty-eight thousand, eight hundred sixty".