2723145 has 32 divisors (see below), whose sum is σ = 4717440. Its totient is φ = 1336320.

The previous prime is 2723143. The next prime is 2723153. The reversal of 2723145 is 5413272.

It is not a de Polignac number, because 2723145 - 2¹ = 2723143 is a prime.

It is a Curzon number.

2723145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2723143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14955 + ... + 15135.

It is an arithmetic number, because the mean of its divisors is an integer number (147420).

2^2723145 is an apocalyptic number.

It is an amenable number.

2723145 is a deficient number, since it is larger than the sum of its proper divisors (1994295).

2723145 is a wasteful number, since it uses less digits than its factorization.

2723145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265.

The product of its digits is 1680, while the sum is 24.

The square root of 2723145 is about 1650.1954429703. The cubic root of 2723145 is about 139.6444207754.

It can be divided in two parts, 27231 and 45, that multiplied together give a triangular number (1225395 = T₁₅₆₅).

The spelling of 2723145 in words is "two million, seven hundred twenty-three thousand, one hundred forty-five".