242624646 has 80 divisors (see below), whose sum is σ = 628048080. Its totient is φ = 69189120.

The previous prime is 242624573. The next prime is 242624653. The reversal of 242624646 is 646426242.

242624646 is a `hidden beast` number, since 2 + 4 + 2 + 6 + 2 + 4 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 242624646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26290 + ... + 34298.

It is an arithmetic number, because the mean of its divisors is an integer number (7850601).

Almost surely, 2^242624646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242624646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314024040).

242624646 is an abundant number, since it is smaller than the sum of its proper divisors (385423434).

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

242624646 is a wasteful number, since it uses less digits than its factorization.

242624646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8051 (or 8042 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 242624646 is about 15576.4131301144. The cubic root of 242624646 is about 623.7036777233.

It can be divided in two parts, 2426 and 24646, that added together give a palindrome (27072).

The spelling of 242624646 in words is "two hundred forty-two million, six hundred twenty-four thousand, six hundred forty-six".