2280981 has 8 divisors (see below), whose sum is σ = 3075840. Its totient is φ = 1503392.

The previous prime is 2280977. The next prime is 2280983. The reversal of 2280981 is 1890822.

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 2280981 - 2² = 2280977 is a prime.

It is a super-2 number, since 2×2280981² = 10405748644722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2280983) 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, 4005 + ... + 4538.

It is an arithmetic number, because the mean of its divisors is an integer number (384480).

2^2280981 is an apocalyptic number.

It is an amenable number.

2280981 is a deficient number, since it is larger than the sum of its proper divisors (794859).

2280981 is an equidigital number, since it uses as much as digits as its factorization.

2280981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8635.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 2280981 is about 1510.2916936804. The cubic root of 2280981 is about 131.6357612307.

It can be divided in two parts, 22 and 80981, that added together give a triangular number (81003 = T₄₀₂).

The spelling of 2280981 in words is "two million, two hundred eighty thousand, nine hundred eighty-one".