2781049 has 8 divisors (see below), whose sum is σ = 2946240. Its totient is φ = 2617776.

The previous prime is 2781029. The next prime is 2781059. The reversal of 2781049 is 9401872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2781049 - 2⁵ = 2781017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2781049.

It is not an unprimeable number, because it can be changed into a prime (2781019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3372 + ... + 4114.

It is an arithmetic number, because the mean of its divisors is an integer number (368280).

2^2781049 is an apocalyptic number.

It is an amenable number.

2781049 is a deficient number, since it is larger than the sum of its proper divisors (165191).

2781049 is a wasteful number, since it uses less digits than its factorization.

2781049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 2781049 is about 1667.6477445792. The cubic root of 2781049 is about 140.6272703502.

The spelling of 2781049 in words is "two million, seven hundred eighty-one thousand, forty-nine".