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245286852 = 22320440571
BaseRepresentation
bin11101001111011…
…00011111000100
3122002112212022020
432213230133010
51000243134402
640201203140
76035622006
oct1647543704
9562485266
10245286852
11116504708
126a1904b0
133ba82365
1424810376
15168028bc
hexe9ec7c4

245286852 has 12 divisors (see below), whose sum is σ = 572336016. Its totient is φ = 81762280.

The previous prime is 245286823. The next prime is 245286857. The reversal of 245286852 is 258682542.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (245286857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10220274 + ... + 10220297.

It is an arithmetic number, because the mean of its divisors is an integer number (47694668).

Almost surely, 2245286852 is an apocalyptic number.

It is an amenable number.

245286852 is an abundant number, since it is smaller than the sum of its proper divisors (327049164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245286852 is a wasteful number, since it uses less digits than its factorization.

245286852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20440578 (or 20440576 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 245286852 is about 15661.6363129783. The cubic root of 245286852 is about 625.9765869565.

The spelling of 245286852 in words is "two hundred forty-five million, two hundred eighty-six thousand, eight hundred fifty-two".

Divisors: 1 2 3 4 6 12 20440571 40881142 61321713 81762284 122643426 245286852