13840234 has 8 divisors (see below), whose sum is σ = 20827620. Its totient is φ = 6897696.

The previous prime is 13840217. The next prime is 13840237. The reversal of 13840234 is 43204831.

It can be written as a sum of positive squares in 2 ways, for example, as 9828225 + 4012009 = 3135^2 + 2003^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 13840199 and 13840208.

It is not an unprimeable number, because it can be changed into a prime (13840237) 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, 10429 + ... + 11680.

Almost surely, 2^13840234 is an apocalyptic number.

13840234 is a deficient number, since it is larger than the sum of its proper divisors (6987386).

13840234 is a wasteful number, since it uses less digits than its factorization.

13840234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22424.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 13840234 is about 3720.2464972096. The cubic root of 13840234 is about 240.0939100083.

The spelling of 13840234 in words is "thirteen million, eight hundred forty thousand, two hundred thirty-four".