13540572 has 18 divisors (see below), whose sum is σ = 34227648. Its totient is φ = 4513512.

The previous prime is 13540543. The next prime is 13540577. The reversal of 13540572 is 27504531.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13540577) 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, 188028 + ... + 188099.

It is an arithmetic number, because the mean of its divisors is an integer number (1901536).

Almost surely, 2^13540572 is an apocalyptic number.

13540572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13540572 is an abundant number, since it is smaller than the sum of its proper divisors (20687076).

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

13540572 is a wasteful number, since it uses less digits than its factorization.

13540572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376137 (or 376132 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 13540572 is about 3679.7516220528. The cubic root of 13540572 is about 238.3484527006.

The spelling of 13540572 in words is "thirteen million, five hundred forty thousand, five hundred seventy-two".