2280621 has 16 divisors (see below), whose sum is σ = 3497984. Its totient is φ = 1294704.

The previous prime is 2280587. The next prime is 2280623. The reversal of 2280621 is 1260822.

2280621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2280621 - 2¹⁵ = 2247853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

2280621 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2280623) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4440 + ... + 4926.

It is an arithmetic number, because the mean of its divisors is an integer number (218624).

2^2280621 is an apocalyptic number.

2280621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2280621 is a deficient number, since it is larger than the sum of its proper divisors (1217363).

2280621 is a wasteful number, since it uses less digits than its factorization.

2280621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 2280621 is about 1510.1725067025. The cubic root of 2280621 is about 131.6288356480.

The spelling of 2280621 in words is "two million, two hundred eighty thousand, six hundred twenty-one".