2721536 has 18 divisors (see below), whose sum is σ = 5432952. Its totient is φ = 1360640.

The previous prime is 2721533. The next prime is 2721553. The reversal of 2721536 is 6351272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060 + ... + 5571.

2^2721536 is an apocalyptic number.

It is an amenable number.

2721536 is a deficient number, since it is larger than the sum of its proper divisors (2711416).

2721536 is an equidigital number, since it uses as much as digits as its factorization.

2721536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10647 (or 10633 counting only the distinct ones).

The product of its digits is 2520, while the sum is 26.

The square root of 2721536 is about 1649.7078529243. The cubic root of 2721536 is about 139.6169118790.

The spelling of 2721536 in words is "two million, seven hundred twenty-one thousand, five hundred thirty-six".