2720530 has 8 divisors (see below), whose sum is σ = 4896972. Its totient is φ = 1088208.

The previous prime is 2720513. The next prime is 2720551. The reversal of 2720530 is 350272.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2712609 + 7921 = 1647^2 + 89^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2720498 and 2720507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136017 + ... + 136036.

2^2720530 is an apocalyptic number.

2720530 is a deficient number, since it is larger than the sum of its proper divisors (2176442).

2720530 is a wasteful number, since it uses less digits than its factorization.

2720530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272060.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 2720530 is about 1649.4029222722. The cubic root of 2720530 is about 139.5997068983.

The spelling of 2720530 in words is "two million, seven hundred twenty thousand, five hundred thirty".