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243142444 = 22587103553
BaseRepresentation
bin11100111111000…
…00111100101100
3121221111220201201
432133200330230
5444221024234
640043215244
76011451046
oct1637407454
9557456651
10243142444
1111527a576
1269517524
133b4b128c
1424412a96
151652c314
hexe7e0f2c

243142444 has 12 divisors (see below), whose sum is σ = 426228264. Its totient is φ = 121362944.

The previous prime is 243142433. The next prime is 243142447. The reversal of 243142444 is 444241342.

It is not an unprimeable number, because it can be changed into a prime (243142447) 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, 49429 + ... + 54124.

It is an arithmetic number, because the mean of its divisors is an integer number (35519022).

Almost surely, 2243142444 is an apocalyptic number.

It is an amenable number.

243142444 is a deficient number, since it is larger than the sum of its proper divisors (183085820).

243142444 is a wasteful number, since it uses less digits than its factorization.

243142444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104144 (or 104142 counting only the distinct ones).

The product of its digits is 12288, while the sum is 28.

The square root of 243142444 is about 15593.0254921872. The cubic root of 243142444 is about 624.1470553863.

Adding to 243142444 its reverse (444241342), we get a palindrome (687383786).

The spelling of 243142444 in words is "two hundred forty-three million, one hundred forty-two thousand, four hundred forty-four".

Divisors: 1 2 4 587 1174 2348 103553 207106 414212 60785611 121571222 243142444