13538224 has 20 divisors (see below), whose sum is σ = 29977744. Its totient is φ = 5802048.

The previous prime is 13538197. The next prime is 13538233. The reversal of 13538224 is 42283531.

13538224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 13538192 and 13538201.

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, 60327 + ... + 60550.

Almost surely, 2^13538224 is an apocalyptic number.

13538224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13538224 is an abundant number, since it is smaller than the sum of its proper divisors (16439520).

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

13538224 is a wasteful number, since it uses less digits than its factorization.

13538224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120892 (or 120886 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 13538224 is about 3679.4325649480. The cubic root of 13538224 is about 238.3346749833.

The spelling of 13538224 in words is "thirteen million, five hundred thirty-eight thousand, two hundred twenty-four".