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253788950 = 2525075779
BaseRepresentation
bin11110010000010…
…00001100010110
3122200112210222202
433020020030112
51004432221300
641103324502
76201112322
oct1710101426
9580483882
10253788950
11120291438
1270bb0732
134076b19c
14259c4982
1517431ad5
hexf208316

253788950 has 12 divisors (see below), whose sum is σ = 472047540. Its totient is φ = 101515560.

The previous prime is 253788917. The next prime is 253788989. The reversal of 253788950 is 59887352.

It is a super-2 number, since 2×2537889502 = 128817662284205000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253788895 and 253788904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2537840 + ... + 2537939.

It is an arithmetic number, because the mean of its divisors is an integer number (39337295).

Almost surely, 2253788950 is an apocalyptic number.

253788950 is a deficient number, since it is larger than the sum of its proper divisors (218258590).

253788950 is a wasteful number, since it uses less digits than its factorization.

253788950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075791 (or 5075786 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 253788950 is about 15930.7548471502. The cubic root of 253788950 is about 633.1270996715.

The spelling of 253788950 in words is "two hundred fifty-three million, seven hundred eighty-eight thousand, nine hundred fifty".

Divisors: 1 2 5 10 25 50 5075779 10151558 25378895 50757790 126894475 253788950