242989880 has 64 divisors (see below), whose sum is σ = 627747840. Its totient is φ = 82922112.

The previous prime is 242989867. The next prime is 242989919. The reversal of 242989880 is 88989242.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61649 + ... + 65471.

It is an arithmetic number, because the mean of its divisors is an integer number (9808560).

Almost surely, 2^242989880 is an apocalyptic number.

242989880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242989880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313873920).

242989880 is an abundant number, since it is smaller than the sum of its proper divisors (384757960).

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

242989880 is a wasteful number, since it uses less digits than its factorization.

242989880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068 (or 4064 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 242989880 is about 15588.1326655889. The cubic root of 242989880 is about 624.0164840594.

The spelling of 242989880 in words is "two hundred forty-two million, nine hundred eighty-nine thousand, eight hundred eighty".