2720369 has 4 divisors (see below), whose sum is σ = 2740080. Its totient is φ = 2700660.

The previous prime is 2720359. The next prime is 2720381. The reversal of 2720369 is 9630272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2720369 - 2¹⁶ = 2654833 is a prime.

It is a super-2 number, since 2×2720369² = 14800814992322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2720329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9647 + ... + 9924.

It is an arithmetic number, because the mean of its divisors is an integer number (685020).

2^2720369 is an apocalyptic number.

It is an amenable number.

2720369 is a deficient number, since it is larger than the sum of its proper divisors (19711).

2720369 is a wasteful number, since it uses less digits than its factorization.

2720369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19710.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 2720369 is about 1649.3541160103. The cubic root of 2720369 is about 139.5969530236.

Subtracting 2720369 from its reverse (9630272), we obtain a triangular number (6909903 = T₃₇₁₇).

It can be divided in two parts, 27203 and 69, that added together give a palindrome (27272).

The spelling of 2720369 in words is "two million, seven hundred twenty thousand, three hundred sixty-nine".