2721772 has 6 divisors (see below), whose sum is σ = 4763108. Its totient is φ = 1360884.

The previous prime is 2721767. The next prime is 2721773. The reversal of 2721772 is 2771272.

It is a self number, because there is not a number n which added to its sum of digits gives 2721772.

It is not an unprimeable number, because it can be changed into a prime (2721773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340218 + ... + 340225.

2^2721772 is an apocalyptic number.

It is an amenable number.

2721772 is a deficient number, since it is larger than the sum of its proper divisors (2041336).

2721772 is a wasteful number, since it uses less digits than its factorization.

2721772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680447 (or 680445 counting only the distinct ones).

The product of its digits is 2744, while the sum is 28.

The square root of 2721772 is about 1649.7793791898. The cubic root of 2721772 is about 139.6209474235.

The spelling of 2721772 in words is "two million, seven hundred twenty-one thousand, seven hundred seventy-two".