13426660 has 48 divisors (see below), whose sum is σ = 30700656. Its totient is φ = 4902912.

The previous prime is 13426657. The next prime is 13426667. The reversal of 13426660 is 6662431.

It can be written as a sum of positive squares in 8 ways, for example, as 1920996 + 11505664 = 1386^2 + 3392^2 .

It is not an unprimeable number, because it can be changed into a prime (13426667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29152 + ... + 29608.

It is an arithmetic number, because the mean of its divisors is an integer number (639597).

Almost surely, 2^13426660 is an apocalyptic number.

13426660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13426660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15350328).

13426660 is an abundant number, since it is smaller than the sum of its proper divisors (17273996).

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

13426660 is a wasteful number, since it uses less digits than its factorization.

13426660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 13426660 is about 3664.2407126170. The cubic root of 13426660 is about 237.6781894525.

The spelling of 13426660 in words is "thirteen million, four hundred twenty-six thousand, six hundred sixty".