3652720 has 20 divisors (see below), whose sum is σ = 8492760. Its totient is φ = 1461056.

The previous prime is 3652703. The next prime is 3652757. The reversal of 3652720 is 272563.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22750 + ... + 22909.

It is an arithmetic number, because the mean of its divisors is an integer number (424638).

Almost surely, 2^3652720 is an apocalyptic number.

It is an amenable number.

3652720 is an abundant number, since it is smaller than the sum of its proper divisors (4840040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3652720 is a wasteful number, since it uses less digits than its factorization.

3652720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45672 (or 45666 counting only the distinct ones).

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

The square root of 3652720 is about 1911.2090414185. The cubic root of 3652720 is about 154.0064089085.

The spelling of 3652720 in words is "three million, six hundred fifty-two thousand, seven hundred twenty".