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242810829 = 3226978981
BaseRepresentation
bin11100111100011…
…11111111001101
3121220220001211200
432132033333031
5444124421304
640032140113
76005600202
oct1636177715
9556801750
10242810829
11115073408
1269397639
133b3c6361
1424367ca9
15164b3e39
hexe78ffcd

242810829 has 6 divisors (see below), whose sum is σ = 350726766. Its totient is φ = 161873880.

The previous prime is 242810807. The next prime is 242810837. The reversal of 242810829 is 928018242.

It can be written as a sum of positive squares in only one way, i.e., 204432804 + 38378025 = 14298^2 + 6195^2 .

It is not a de Polignac number, because 242810829 - 28 = 242810573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242810793 and 242810802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242810849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13489482 + ... + 13489499.

It is an arithmetic number, because the mean of its divisors is an integer number (58454461).

Almost surely, 2242810829 is an apocalyptic number.

It is an amenable number.

242810829 is a deficient number, since it is larger than the sum of its proper divisors (107915937).

242810829 is a wasteful number, since it uses less digits than its factorization.

242810829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26978987 (or 26978984 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 242810829 is about 15582.3884241152. The cubic root of 242810829 is about 623.8631742038.

The spelling of 242810829 in words is "two hundred forty-two million, eight hundred ten thousand, eight hundred twenty-nine".

Divisors: 1 3 9 26978981 80936943 242810829