13521726 has 12 divisors (see below), whose sum is σ = 29297112. Its totient is φ = 4507236.

The previous prime is 13521713. The next prime is 13521727. The reversal of 13521726 is 62712531.

It is a happy number.

It is a super-3 number, since 3×13521726³ (a number of 22 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13521726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 375586 + ... + 375621.

It is an arithmetic number, because the mean of its divisors is an integer number (2441426).

Almost surely, 2^13521726 is an apocalyptic number.

13521726 is an abundant number, since it is smaller than the sum of its proper divisors (15775386).

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

13521726 is a wasteful number, since it uses less digits than its factorization.

13521726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751215 (or 751212 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 13521726 is about 3677.1899597383. The cubic root of 13521726 is about 238.2378222062.

The spelling of 13521726 in words is "thirteen million, five hundred twenty-one thousand, seven hundred twenty-six".