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252512889 = 3292902447
BaseRepresentation
bin11110000110100…
…00101001111001
3122121010222120020
433003100221321
51004120403024
641020121053
76154216116
oct1703205171
9577128506
10252512889
1111a59a742
1270696189
1340412415
142577190d
151727d979
hexf0d0a79

252512889 has 8 divisors (see below), whose sum is σ = 348293760. Its totient is φ = 162536976.

The previous prime is 252512879. The next prime is 252512893. The reversal of 252512889 is 988215252.

252512889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 252512889 - 24 = 252512873 is a prime.

It is a super-2 number, since 2×2525128892 = 127525518222252642, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 252512889.

It is not an unprimeable number, because it can be changed into a prime (252512879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1451137 + ... + 1451310.

It is an arithmetic number, because the mean of its divisors is an integer number (43536720).

Almost surely, 2252512889 is an apocalyptic number.

252512889 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

252512889 is a deficient number, since it is larger than the sum of its proper divisors (95780871).

252512889 is a wasteful number, since it uses less digits than its factorization.

252512889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902479.

The product of its digits is 115200, while the sum is 42.

The square root of 252512889 is about 15890.6541400913. The cubic root of 252512889 is about 632.0641867525.

The spelling of 252512889 in words is "two hundred fifty-two million, five hundred twelve thousand, eight hundred eighty-nine".

Divisors: 1 3 29 87 2902447 8707341 84170963 252512889