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2216880 = 243253079
BaseRepresentation
bin1000011101001110110000
311011121222200
420131032300
51031420010
6115303200
724562131
oct10351660
94147880
102216880
111284636
128aab00
135c8083
14419c88
152dbcc0
hex21d3b0

2216880 has 60 divisors (see below), whose sum is σ = 7447440. Its totient is φ = 590976.

The previous prime is 2216873. The next prime is 2216887. The reversal of 2216880 is 886122.

It is an interprime number because it is at equal distance from previous prime (2216873) and next prime (2216887).

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 820 + ... + 2259.

It is an arithmetic number, because the mean of its divisors is an integer number (124124).

22216880 is an apocalyptic number.

2216880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2216880 is an abundant number, since it is smaller than the sum of its proper divisors (5230560).

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

2216880 is a wasteful number, since it uses less digits than its factorization.

2216880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098 (or 3089 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 2216880 is about 1488.9190710042. The cubic root of 2216880 is about 130.3909336665.

The spelling of 2216880 in words is "two million, two hundred sixteen thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 45 48 60 72 80 90 120 144 180 240 360 720 3079 6158 9237 12316 15395 18474 24632 27711 30790 36948 46185 49264 55422 61580 73896 92370 110844 123160 138555 147792 184740 221688 246320 277110 369480 443376 554220 738960 1108440 2216880