242774620 has 96 divisors (see below), whose sum is σ = 594397440. Its totient is φ = 82314240.

The previous prime is 242774617. The next prime is 242774621. The reversal of 242774620 is 26477242.

It is a super-2 number, since 2×242774620² = 117879032232288800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242774621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 519627 + ... + 520093.

It is an arithmetic number, because the mean of its divisors is an integer number (6191640).

Almost surely, 2^242774620 is an apocalyptic number.

242774620 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 242774620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297198720).

242774620 is an abundant number, since it is smaller than the sum of its proper divisors (351622820).

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

242774620 is a wasteful number, since it uses less digits than its factorization.

242774620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 242774620 is about 15581.2265242503. The cubic root of 242774620 is about 623.8321616047.

The spelling of 242774620 in words is "two hundred forty-two million, seven hundred seventy-four thousand, six hundred twenty".