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252164487 = 3139604711
BaseRepresentation
bin11110000011110…
…11100110000111
3122120111021122110
433001323212013
51004023230422
641004432103
76151235301
oct1701734607
9576437573
10252164487
1111a381a03
1270548633
134031c973
14256c0971
151721060c
hexf07b987

252164487 has 8 divisors (see below), whose sum is σ = 338638720. Its totient is φ = 166899960.

The previous prime is 252164477. The next prime is 252164527. The reversal of 252164487 is 784461252.

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

It is not a de Polignac number, because 252164487 - 211 = 252162439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252164477) 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, 301939 + ... + 302772.

It is an arithmetic number, because the mean of its divisors is an integer number (42329840).

Almost surely, 2252164487 is an apocalyptic number.

252164487 is a deficient number, since it is larger than the sum of its proper divisors (86474233).

252164487 is a wasteful number, since it uses less digits than its factorization.

252164487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604853.

The product of its digits is 107520, while the sum is 39.

The square root of 252164487 is about 15879.6878747663. The cubic root of 252164487 is about 631.7733583200.

The spelling of 252164487 in words is "two hundred fifty-two million, one hundred sixty-four thousand, four hundred eighty-seven".

Divisors: 1 3 139 417 604711 1814133 84054829 252164487