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228867560 = 2355721689
BaseRepresentation
bin11011010010000…
…11110111101000
3120221122200021022
431221003313220
5432042230220
634413232012
75446225235
oct1551036750
9527580238
10228867560
1110820a649
1264792608
13385539bc
142257878c
151515c925
hexda43de8

228867560 has 16 divisors (see below), whose sum is σ = 514952100. Its totient is φ = 91547008.

The previous prime is 228867557. The next prime is 228867563. The reversal of 228867560 is 65768822.

It is an interprime number because it is at equal distance from previous prime (228867557) and next prime (228867563).

It can be written as a sum of positive squares in 2 ways, for example, as 206267044 + 22600516 = 14362^2 + 4754^2 .

It is not an unprimeable number, because it can be changed into a prime (228867563) 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, 2860805 + ... + 2860884.

Almost surely, 2228867560 is an apocalyptic number.

228867560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228867560 is an abundant number, since it is smaller than the sum of its proper divisors (286084540).

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

228867560 is a wasteful number, since it uses less digits than its factorization.

228867560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721700 (or 5721696 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 228867560 is about 15128.3693767703. The cubic root of 228867560 is about 611.6853509510.

The spelling of 228867560 in words is "two hundred twenty-eight million, eight hundred sixty-seven thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 5721689 11443378 22886756 28608445 45773512 57216890 114433780 228867560