2721047 has 16 divisors (see below), whose sum is σ = 3360000. Its totient is φ = 2151360.

The previous prime is 2721031. The next prime is 2721053. The reversal of 2721047 is 7401272.

It is a cyclic number.

It is not a de Polignac number, because 2721047 - 2⁴ = 2721031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5204 + ... + 5702.

It is an arithmetic number, because the mean of its divisors is an integer number (210000).

2^2721047 is an apocalyptic number.

2721047 is a deficient number, since it is larger than the sum of its proper divisors (638953).

2721047 is a wasteful number, since it uses less digits than its factorization.

2721047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 2721047 is about 1649.5596382065. The cubic root of 2721047 is about 139.6085493515.

The spelling of 2721047 in words is "two million, seven hundred twenty-one thousand, forty-seven".