13438772 has 24 divisors (see below), whose sum is σ = 25147584. Its totient is φ = 6261632.

The previous prime is 13438771. The next prime is 13438781. The reversal of 13438772 is 27783431.

13438772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13438771) 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, 6353 + ... + 8199.

It is an arithmetic number, because the mean of its divisors is an integer number (1047816).

Almost surely, 2^13438772 is an apocalyptic number.

It is an amenable number.

13438772 is a deficient number, since it is larger than the sum of its proper divisors (11708812).

13438772 is a wasteful number, since it uses less digits than its factorization.

13438772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975 (or 1973 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 13438772 is about 3665.8930699081. The cubic root of 13438772 is about 237.7496366835.

The spelling of 13438772 in words is "thirteen million, four hundred thirty-eight thousand, seven hundred seventy-two".