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252028228 = 221031075717
BaseRepresentation
bin11110000010110…
…10010101000100
3122120020100201211
433001122111010
51004004400403
641001501204
76150130114
oct1701322504
9576210654
10252028228
1111a2995a1
12704a1804
13402a293a
1425687044
15171d506d
hexf05a544

252028228 has 24 divisors (see below), whose sum is σ = 449572032. Its totient is φ = 123602784.

The previous prime is 252028223. The next prime is 252028237. The reversal of 252028228 is 822820252.

252028228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 252028228.

It is not an unprimeable number, because it can be changed into a prime (252028223) 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, 41226 + ... + 46942.

It is an arithmetic number, because the mean of its divisors is an integer number (18732168).

Almost surely, 2252028228 is an apocalyptic number.

It is an amenable number.

252028228 is a deficient number, since it is larger than the sum of its proper divisors (197543804).

252028228 is a wasteful number, since it uses less digits than its factorization.

252028228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5931 (or 5929 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 252028228 is about 15875.3969399193. The cubic root of 252028228 is about 631.6595433029.

The spelling of 252028228 in words is "two hundred fifty-two million, twenty-eight thousand, two hundred twenty-eight".

Divisors: 1 2 4 103 107 206 214 412 428 5717 11021 11434 22042 22868 44084 588851 611719 1177702 1223438 2355404 2446876 63007057 126014114 252028228