2279745 has 40 divisors (see below), whose sum is σ = 4411176. Its totient is φ = 1119744.

The previous prime is 2279743. The next prime is 2279749. The reversal of 2279745 is 5479722.

2279745 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 4 ways, for example, as 20736 + 2259009 = 144^2 + 1503^2 .

It is not a de Polignac number, because 2279745 - 2¹ = 2279743 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2279741) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5049 + ... + 5481.

2^2279745 is an apocalyptic number.

It is an amenable number.

2279745 is a deficient number, since it is larger than the sum of its proper divisors (2131431).

2279745 is a wasteful number, since it uses less digits than its factorization.

2279745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 454 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 2279745 is about 1509.8824457553. The cubic root of 2279745 is about 131.6119803520.

The spelling of 2279745 in words is "two million, two hundred seventy-nine thousand, seven hundred forty-five".