242666648 has 32 divisors (see below), whose sum is σ = 529817760. Its totient is φ = 102036480.

The previous prime is 242666621. The next prime is 242666657. The reversal of 242666648 is 846666242.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 242666599 and 242666608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37913 + ... + 43848.

It is an arithmetic number, because the mean of its divisors is an integer number (16556805).

Almost surely, 2^242666648 is an apocalyptic number.

242666648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

242666648 is an abundant number, since it is smaller than the sum of its proper divisors (287151112).

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

242666648 is a wasteful number, since it uses less digits than its factorization.

242666648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81827 (or 81823 counting only the distinct ones).

The product of its digits is 663552, while the sum is 44.

The square root of 242666648 is about 15577.7613282525. The cubic root of 242666648 is about 623.7396664968.

The spelling of 242666648 in words is "two hundred forty-two million, six hundred sixty-six thousand, six hundred forty-eight".