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242868180 = 22354047803
BaseRepresentation
bin11100111100111…
…01111111010100
3121220222222111210
432132131333110
5444133240210
640033301420
76006226332
oct1636357724
9556888453
10242868180
11115102505
1269404870
133b4164a9
1424380b52
15164c5e20
hexe79dfd4

242868180 has 24 divisors (see below), whose sum is σ = 680031072. Its totient is φ = 64764832.

The previous prime is 242868179. The next prime is 242868181. The reversal of 242868180 is 81868242.

It is an interprime number because it is at equal distance from previous prime (242868179) and next prime (242868181).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242868181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2023842 + ... + 2023961.

It is an arithmetic number, because the mean of its divisors is an integer number (28334628).

Almost surely, 2242868180 is an apocalyptic number.

242868180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242868180 is an abundant number, since it is smaller than the sum of its proper divisors (437162892).

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

242868180 is a wasteful number, since it uses less digits than its factorization.

242868180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4047815 (or 4047813 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 242868180 is about 15584.2285660857. The cubic root of 242868180 is about 623.9122883783.

The spelling of 242868180 in words is "two hundred forty-two million, eight hundred sixty-eight thousand, one hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 4047803 8095606 12143409 16191212 20239015 24286818 40478030 48573636 60717045 80956060 121434090 242868180