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228102880 = 2554992857
BaseRepresentation
bin11011001100010…
…01001011100000
3120220012211022211
431212021023200
5431343243010
634345011504
75436561655
oct1546111340
9526184284
10228102880
11107838085
1264483b94
1338346925
1422419c2c
151505b08a
hexd9892e0

228102880 has 48 divisors (see below), whose sum is σ = 540162000. Its totient is φ = 91026432.

The previous prime is 228102877. The next prime is 228102887. The reversal of 228102880 is 88201822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228102887) 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, 78412 + ... + 81268.

It is an arithmetic number, because the mean of its divisors is an integer number (11253375).

Almost surely, 2228102880 is an apocalyptic number.

228102880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228102880 is an abundant number, since it is smaller than the sum of its proper divisors (312059120).

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

228102880 is a wasteful number, since it uses less digits than its factorization.

228102880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371 (or 3363 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 228102880 is about 15103.0751835512. The cubic root of 228102880 is about 611.0033474137.

The spelling of 228102880 in words is "two hundred twenty-eight million, one hundred two thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 499 998 1996 2495 2857 3992 4990 5714 7984 9980 11428 14285 15968 19960 22856 28570 39920 45712 57140 79840 91424 114280 228560 457120 1425643 2851286 5702572 7128215 11405144 14256430 22810288 28512860 45620576 57025720 114051440 228102880