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228462880 = 2551427893
BaseRepresentation
bin11011001111000…
…01000100100000
3120220220010011011
431213201010200
5431441303010
634400430304
75442621352
oct1547410440
9526803134
10228462880
11107a635a8
1264618394
1338441749
14224b10d2
15150cca8a
hexd9e1120

228462880 has 24 divisors (see below), whose sum is σ = 539743932. Its totient is φ = 91385088.

The previous prime is 228462863. The next prime is 228462907. The reversal of 228462880 is 88264822.

It can be written as a sum of positive squares in 2 ways, for example, as 207705744 + 20757136 = 14412^2 + 4556^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713787 + ... + 714106.

Almost surely, 2228462880 is an apocalyptic number.

228462880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228462880 is an abundant number, since it is smaller than the sum of its proper divisors (311281052).

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

228462880 is a wasteful number, since it uses less digits than its factorization.

228462880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427908 (or 1427900 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 228462880 is about 15114.9885874916. The cubic root of 228462880 is about 611.3246141298.

The spelling of 228462880 in words is "two hundred twenty-eight million, four hundred sixty-two thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 1427893 2855786 5711572 7139465 11423144 14278930 22846288 28557860 45692576 57115720 114231440 228462880