3652581720 has 64 divisors (see below), whose sum is σ = 10963319040. Its totient is φ = 973526400.

The previous prime is 3652581683. The next prime is 3652581731. The reversal of 3652581720 is 271852563.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270735 + ... + 283905.

It is an arithmetic number, because the mean of its divisors is an integer number (171301860).

Almost surely, 2^3652581720 is an apocalyptic number.

3652581720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3652581720 is an abundant number, since it is smaller than the sum of its proper divisors (7310737320).

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

3652581720 is a wasteful number, since it uses less digits than its factorization.

3652581720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15496 (or 15492 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 3652581720 is about 60436.5925578205. The cubic root of 3652581720 is about 1540.0446549147.

The spelling of 3652581720 in words is "three billion, six hundred fifty-two million, five hundred eighty-one thousand, seven hundred twenty".