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252623189 = 71324111519
BaseRepresentation
bin11110000111010…
…11100101010101
3122121100120212102
433003223211111
51004132420224
641022331445
76155155520
oct1703534525
9577316772
10252623189
1111a6655a5
1270729b85
13404506a0
142579dbb7
15172a14ae
hexf0eb955

252623189 has 16 divisors (see below), whose sum is σ = 312238080. Its totient is φ = 199031040.

The previous prime is 252623177. The next prime is 252623197. The reversal of 252623189 is 981326252.

It is not a de Polignac number, because 252623189 - 216 = 252557653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252623149) 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, 16172 + ... + 27690.

It is an arithmetic number, because the mean of its divisors is an integer number (19514880).

Almost surely, 2252623189 is an apocalyptic number.

It is an amenable number.

252623189 is a deficient number, since it is larger than the sum of its proper divisors (59614891).

252623189 is a wasteful number, since it uses less digits than its factorization.

252623189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11780.

The product of its digits is 51840, while the sum is 38.

The square root of 252623189 is about 15894.1243546161. The cubic root of 252623189 is about 632.1562038790.

The spelling of 252623189 in words is "two hundred fifty-two million, six hundred twenty-three thousand, one hundred eighty-nine".

Divisors: 1 7 13 91 241 1687 3133 11519 21931 80633 149747 1048229 2776079 19432553 36089027 252623189