13620546 has 48 divisors (see below), whose sum is σ = 30958200. Its totient is φ = 4322304.

The previous prime is 13620533. The next prime is 13620571. The reversal of 13620546 is 64502631.

It can be written as a sum of positive squares in 4 ways, for example, as 8381025 + 5239521 = 2895^2 + 2289^2 .

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 23 ways as a sum of consecutive naturals, for example, 50500 + ... + 50768.

Almost surely, 2^13620546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13620546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15479100).

13620546 is an abundant number, since it is smaller than the sum of its proper divisors (17337654).

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

13620546 is a wasteful number, since it uses less digits than its factorization.

13620546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 13620546 is about 3690.6023898545. The cubic root of 13620546 is about 238.8167803836.

The spelling of 13620546 in words is "thirteen million, six hundred twenty thousand, five hundred forty-six".