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2280865 = 53712329
BaseRepresentation
bin1000101100110110100001
311021212202111
420230312201
51040441430
6120515321
725246516
oct10546641
94255674
102280865
111318714
1291bb41
1361b232
1443530d
15300c2a
hex22cda1

2280865 has 8 divisors (see below), whose sum is σ = 2811240. Its totient is φ = 1775232.

The previous prime is 2280857. The next prime is 2280869. The reversal of 2280865 is 5680822.

It can be written as a sum of positive squares in 4 ways, for example, as 69696 + 2211169 = 264^2 + 1487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2280865 - 23 = 2280857 is a prime.

It is a d-powerful number, because it can be written as 24 + 216 + 8 + 0 + 86 + 62 + 59 .

It is not an unprimeable number, because it can be changed into a prime (2280869) 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, 5980 + ... + 6349.

It is an arithmetic number, because the mean of its divisors is an integer number (351405).

22280865 is an apocalyptic number.

It is an amenable number.

2280865 is a deficient number, since it is larger than the sum of its proper divisors (530375).

2280865 is a wasteful number, since it uses less digits than its factorization.

2280865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12371.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 2280865 is about 1510.2532900146. The cubic root of 2280865 is about 131.6335297336.

The spelling of 2280865 in words is "two million, two hundred eighty thousand, eight hundred sixty-five".

Divisors: 1 5 37 185 12329 61645 456173 2280865