13657438 has 8 divisors (see below), whose sum is σ = 20833560. Its totient is φ = 6712920.

The previous prime is 13657433. The next prime is 13657471. The reversal of 13657438 is 83475631.

13657438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13657438² = 373051225447688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13657397 and 13657406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13657433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57753 + ... + 57988.

It is an arithmetic number, because the mean of its divisors is an integer number (2604195).

Almost surely, 2^13657438 is an apocalyptic number.

13657438 is a deficient number, since it is larger than the sum of its proper divisors (7176122).

13657438 is a wasteful number, since it uses less digits than its factorization.

13657438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115802.

The product of its digits is 60480, while the sum is 37.

The square root of 13657438 is about 3695.5971100757. The cubic root of 13657438 is about 239.0322021466.

The spelling of 13657438 in words is "thirteen million, six hundred fifty-seven thousand, four hundred thirty-eight".