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2280829 = 5094481
BaseRepresentation
bin1000101100110101111101
311021212201011
420230311331
51040441304
6120515221
725246435
oct10546575
94255634
102280829
111318691
1291bb11
1361b205
144352c5
15300c04
hex22cd7d

2280829 has 4 divisors (see below), whose sum is σ = 2285820. Its totient is φ = 2275840.

The previous prime is 2280827. The next prime is 2280833. The reversal of 2280829 is 9280822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1822500 + 458329 = 1350^2 + 677^2 .

It is a cyclic number.

It is not a de Polignac number, because 2280829 - 21 = 2280827 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2280829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2280823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1732 + ... + 2749.

It is an arithmetic number, because the mean of its divisors is an integer number (571455).

22280829 is an apocalyptic number.

It is an amenable number.

2280829 is a deficient number, since it is larger than the sum of its proper divisors (4991).

2280829 is an equidigital number, since it uses as much as digits as its factorization.

2280829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4990.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2280829 is about 1510.2413714370. The cubic root of 2280829 is about 131.6328371847.

The spelling of 2280829 in words is "two million, two hundred eighty thousand, eight hundred twenty-nine".

Divisors: 1 509 4481 2280829