13706438 has 4 divisors (see below), whose sum is σ = 20559660. Its totient is φ = 6853218.

The previous prime is 13706419. The next prime is 13706443. The reversal of 13706438 is 83460731.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3426608 + ... + 3426611.

It is an arithmetic number, because the mean of its divisors is an integer number (5139915).

Almost surely, 2^13706438 is an apocalyptic number.

13706438 is a deficient number, since it is larger than the sum of its proper divisors (6853222).

13706438 is an equidigital number, since it uses as much as digits as its factorization.

13706438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6853221.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 13706438 is about 3702.2206849403. The cubic root of 13706438 is about 239.3177266191.

The spelling of 13706438 in words is "thirteen million, seven hundred six thousand, four hundred thirty-eight".