13089620 has 18 divisors (see below), whose sum is σ = 27522222. Its totient is φ = 5229376.

The previous prime is 13089617. The next prime is 13089647. The reversal of 13089620 is 2698031.

It can be written as a sum of positive squares in 3 ways, for example, as 6130576 + 6959044 = 2476^2 + 2638^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15776 + ... + 16584.

Almost surely, 2^13089620 is an apocalyptic number.

13089620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13089620 is an abundant number, since it is smaller than the sum of its proper divisors (14432602).

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

13089620 is an frugal number, since it uses more digits than its factorization.

13089620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 13089620 is about 3617.9579875947. The cubic root of 13089620 is about 235.6725565205.

The spelling of 13089620 in words is "thirteen million, eighty-nine thousand, six hundred twenty".