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242765020 = 22512138251
BaseRepresentation
bin11100111100001…
…00110011011100
3121220210202000001
432132010303130
5444121440040
640031144044
76005316511
oct1636046334
9556722001
10242765020
11115041a53
1269375024
133b3ab554
1424355308
15164a559a
hexe784cdc

242765020 has 12 divisors (see below), whose sum is σ = 509806584. Its totient is φ = 97106000.

The previous prime is 242765009. The next prime is 242765021. The reversal of 242765020 is 20567242.

It is a self number, because there is not a number n which added to its sum of digits gives 242765020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242765021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6069106 + ... + 6069145.

It is an arithmetic number, because the mean of its divisors is an integer number (42483882).

Almost surely, 2242765020 is an apocalyptic number.

242765020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242765020 is an abundant number, since it is smaller than the sum of its proper divisors (267041564).

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

242765020 is a wasteful number, since it uses less digits than its factorization.

242765020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12138260 (or 12138258 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 242765020 is about 15580.9184581654. The cubic root of 242765020 is about 623.8239387961.

The spelling of 242765020 in words is "two hundred forty-two million, seven hundred sixty-five thousand, twenty".

Divisors: 1 2 4 5 10 20 12138251 24276502 48553004 60691255 121382510 242765020