2745620 has 24 divisors (see below), whose sum is σ = 5824224. Its totient is φ = 1087136.

The previous prime is 2745607. The next prime is 2745637. The reversal of 2745620 is 265472.

It is a self number, because there is not a number n which added to its sum of digits gives 2745620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1499 + ... + 2781.

It is an arithmetic number, because the mean of its divisors is an integer number (242676).

2^2745620 is an apocalyptic number.

2745620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2745620 is an abundant number, since it is smaller than the sum of its proper divisors (3078604).

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

2745620 is a wasteful number, since it uses less digits than its factorization.

2745620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399 (or 1397 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 2745620 is about 1656.9912492225. The cubic root of 2745620 is about 140.0275456003.

The spelling of 2745620 in words is "two million, seven hundred forty-five thousand, six hundred twenty".