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250220243 = 71323119551
BaseRepresentation
bin11101110101000…
…00111011010011
3122102211111122102
432322200323103
51003024021433
640455031015
76125560040
oct1672407323
9572744572
10250220243
11119274199
126b96b46b
133cabba20
14253361c7
1516e794e8
hexeea0ed3

250220243 has 16 divisors (see below), whose sum is σ = 321355776. Its totient is φ = 189367200.

The previous prime is 250220237. The next prime is 250220279. The reversal of 250220243 is 342022052.

It is a cyclic number.

It is not a de Polignac number, because 250220243 - 210 = 250219219 is a prime.

It is a super-2 number, since 2×2502202432 = 125220340013958098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (250220203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57683 + ... + 61868.

It is an arithmetic number, because the mean of its divisors is an integer number (20084736).

Almost surely, 2250220243 is an apocalyptic number.

250220243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

250220243 is a deficient number, since it is larger than the sum of its proper divisors (71135533).

250220243 is a wasteful number, since it uses less digits than its factorization.

250220243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119594.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 250220243 is about 15818.3514627789. The cubic root of 250220243 is about 630.1454631775.

Adding to 250220243 its reverse (342022052), we get a palindrome (592242295).

The spelling of 250220243 in words is "two hundred fifty million, two hundred twenty thousand, two hundred forty-three".

Divisors: 1 7 13 23 91 161 299 2093 119551 836857 1554163 2749673 10879141 19247711 35745749 250220243