2280745 has 4 divisors (see below), whose sum is σ = 2736900. Its totient is φ = 1824592.

The previous prime is 2280709. The next prime is 2280767. The reversal of 2280745 is 5470822.

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 1468944 + 811801 = 1212^2 + 901^2 .

It is a cyclic number.

It is not a de Polignac number, because 2280745 - 2¹⁵ = 2247977 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228070 + ... + 228079.

It is an arithmetic number, because the mean of its divisors is an integer number (684225).

2^2280745 is an apocalyptic number.

It is an amenable number.

2280745 is a deficient number, since it is larger than the sum of its proper divisors (456155).

2280745 is an equidigital number, since it uses as much as digits as its factorization.

2280745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456154.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2280745 is about 1510.2135610568. The cubic root of 2280745 is about 131.6312212088.

It can be divided in two parts, 2280 and 745, that added together give a square (3025 = 55²).

The spelling of 2280745 in words is "two million, two hundred eighty thousand, seven hundred forty-five".