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243080914 = 2121540457
BaseRepresentation
bin11100111110100…
…01111011010010
3121221101210022211
432133101323102
5444212042124
640042022334
76011103466
oct1637217322
9557353284
10243080914
1111523831a
12694a79aa
133b48c27b
14243d84a6
1516518e94
hexe7d1ed2

243080914 has 4 divisors (see below), whose sum is σ = 364621374. Its totient is φ = 121540456.

The previous prime is 243080899. The next prime is 243080917. The reversal of 243080914 is 419080342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 123943689 + 119137225 = 11133^2 + 10915^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (243080917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60770227 + ... + 60770230.

Almost surely, 2243080914 is an apocalyptic number.

243080914 is a deficient number, since it is larger than the sum of its proper divisors (121540460).

243080914 is a wasteful number, since it uses less digits than its factorization.

243080914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121540459.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 243080914 is about 15591.0523698691. The cubic root of 243080914 is about 624.0944017406.

The spelling of 243080914 in words is "two hundred forty-three million, eighty thousand, nine hundred fourteen".

Divisors: 1 2 121540457 243080914