2720356 has 12 divisors (see below), whose sum is σ = 4839100. Its totient is φ = 1337760.

The previous prime is 2720329. The next prime is 2720359. The reversal of 2720356 is 6530272.

It can be written as a sum of positive squares in 2 ways, for example, as 379456 + 2340900 = 616^2 + 1530^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2720356.

It is not an unprimeable number, because it can be changed into a prime (2720359) 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, 5331 + ... + 5818.

2^2720356 is an apocalyptic number.

It is an amenable number.

2720356 is a deficient number, since it is larger than the sum of its proper divisors (2118744).

2720356 is a wasteful number, since it uses less digits than its factorization.

2720356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11214 (or 11212 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 2720356 is about 1649.3501750690. The cubic root of 2720356 is about 139.5967306564.

The spelling of 2720356 in words is "two million, seven hundred twenty thousand, three hundred fifty-six".