13537428 has 24 divisors (see below), whose sum is σ = 32034240. Its totient is φ = 4448640.

The previous prime is 13537427. The next prime is 13537441. The reversal of 13537428 is 82473531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13537427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7093 + ... + 8796.

It is an arithmetic number, because the mean of its divisors is an integer number (1334760).

Almost surely, 2^13537428 is an apocalyptic number.

It is an amenable number.

13537428 is an abundant number, since it is smaller than the sum of its proper divisors (18496812).

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

13537428 is a wasteful number, since it uses less digits than its factorization.

13537428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15967 (or 15965 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 13537428 is about 3679.3243945051. The cubic root of 13537428 is about 238.3300038113.

The spelling of 13537428 in words is "thirteen million, five hundred thirty-seven thousand, four hundred twenty-eight".