13526780 has 12 divisors (see below), whose sum is σ = 28406280. Its totient is φ = 5410704.

The previous prime is 13526771. The next prime is 13526797. The reversal of 13526780 is 8762531.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338150 + ... + 338189.

It is an arithmetic number, because the mean of its divisors is an integer number (2367190).

Almost surely, 2^13526780 is an apocalyptic number.

13526780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13526780 is an abundant number, since it is smaller than the sum of its proper divisors (14879500).

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

13526780 is a wasteful number, since it uses less digits than its factorization.

13526780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676348 (or 676346 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 13526780 is about 3677.8771050703. The cubic root of 13526780 is about 238.2675004679.

The spelling of 13526780 in words is "thirteen million, five hundred twenty-six thousand, seven hundred eighty".