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28560252 = 22371033301
BaseRepresentation
bin110110011110…
…0101101111100
31222202000022010
41230330231330
524302412002
62500051220
7464521020
oct154745574
958660263
1028560252
1115137816
129693b10
135bbc876
143b16380
15279246c
hex1b3cb7c

28560252 has 48 divisors (see below), whose sum is σ = 76923392. Its totient is φ = 8078400.

The previous prime is 28560251. The next prime is 28560353. The reversal of 28560252 is 25206582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28560251) 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, 7002 + ... + 10302.

Almost surely, 228560252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28560252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38461696).

28560252 is an abundant number, since it is smaller than the sum of its proper divisors (48363140).

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

28560252 is a wasteful number, since it uses less digits than its factorization.

28560252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418 (or 3416 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 28560252 is about 5344.1792634604. The cubic root of 28560252 is about 305.6708408956.

The spelling of 28560252 in words is "twenty-eight million, five hundred sixty thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 103 206 309 412 618 721 1236 1442 2163 2884 3301 4326 6602 8652 9903 13204 19806 23107 39612 46214 69321 92428 138642 277284 340003 680006 1020009 1360012 2040018 2380021 4080036 4760042 7140063 9520084 14280126 28560252