242644028 has 24 divisors (see below), whose sum is σ = 467488560. Its totient is φ = 109278720.

The previous prime is 242644021. The next prime is 242644067. The reversal of 242644028 is 820446242.

It is a super-2 number, since 2×242644028² = 117752248648129568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242643985 and 242644003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242644021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20501 + ... + 30092.

It is an arithmetic number, because the mean of its divisors is an integer number (19478690).

Almost surely, 2^242644028 is an apocalyptic number.

It is an amenable number.

242644028 is a deficient number, since it is larger than the sum of its proper divisors (224844532).

242644028 is a wasteful number, since it uses less digits than its factorization.

242644028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50717 (or 50715 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The square root of 242644028 is about 15577.0352763291. The cubic root of 242644028 is about 623.7202854106.

The spelling of 242644028 in words is "two hundred forty-two million, six hundred forty-four thousand, twenty-eight".