2781252 has 36 divisors (see below), whose sum is σ = 7338240. Its totient is φ = 886512.

The previous prime is 2781221. The next prime is 2781271. The reversal of 2781252 is 2521872.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 852 + ... + 2507.

It is an arithmetic number, because the mean of its divisors is an integer number (203840).

2^2781252 is an apocalyptic number.

It is an amenable number.

2781252 is an abundant number, since it is smaller than the sum of its proper divisors (4556988).

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

2781252 is a wasteful number, since it uses less digits than its factorization.

2781252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392 (or 3387 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2781252 is about 1667.7086076410. The cubic root of 2781252 is about 140.6306919178.

The spelling of 2781252 in words is "two million, seven hundred eighty-one thousand, two hundred fifty-two".