2720949 has 16 divisors (see below), whose sum is σ = 4523520. Its totient is φ = 1413360.

The previous prime is 2720917. The next prime is 2720953. The reversal of 2720949 is 9490272.

It is not a de Polignac number, because 2720949 - 2⁵ = 2720917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720999) 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, 5659 + ... + 6120.

It is an arithmetic number, because the mean of its divisors is an integer number (282720).

2^2720949 is an apocalyptic number.

It is an amenable number.

2720949 is a deficient number, since it is larger than the sum of its proper divisors (1802571).

2720949 is a wasteful number, since it uses less digits than its factorization.

2720949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11800.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 2720949 is about 1649.5299330415. The cubic root of 2720949 is about 139.6068733052.

Adding to 2720949 its reverse (9490272), we get a palindrome (12211221).

The spelling of 2720949 in words is "two million, seven hundred twenty thousand, nine hundred forty-nine".