13620500 has 24 divisors (see below), whose sum is σ = 29748264. Its totient is φ = 5448000.

The previous prime is 13620493. The next prime is 13620521. The reversal of 13620500 is 502631.

It can be written as a sum of positive squares in 4 ways, for example, as 327184 + 13293316 = 572^2 + 3646^2 .

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 7 ways as a sum of consecutive naturals, for example, 13121 + ... + 14120.

It is an arithmetic number, because the mean of its divisors is an integer number (1239511).

Almost surely, 2^13620500 is an apocalyptic number.

13620500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13620500 is an abundant number, since it is smaller than the sum of its proper divisors (16127764).

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

13620500 is a wasteful number, since it uses less digits than its factorization.

13620500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27260 (or 27248 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 13620500 is about 3690.5961578043. The cubic root of 13620500 is about 238.8165115352.

The spelling of 13620500 in words is "thirteen million, six hundred twenty thousand, five hundred".