2745090 has 40 divisors (see below), whose sum is σ = 7383420. Its totient is φ = 731808.

The previous prime is 2745049. The next prime is 2745091. The reversal of 2745090 is 905472.

It can be written as a sum of positive squares in 2 ways, for example, as 2595321 + 149769 = 1611^2 + 387^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2745091) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 885 + ... + 2504.

2^2745090 is an apocalyptic number.

2745090 is an abundant number, since it is smaller than the sum of its proper divisors (4638330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2745090 is a wasteful number, since it uses less digits than its factorization.

2745090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408 (or 3399 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2745090 is about 1656.8313130793. The cubic root of 2745090 is about 140.0185349610.

The spelling of 2745090 in words is "two million, seven hundred forty-five thousand, ninety".