13840046 has 16 divisors (see below), whose sum is σ = 23020848. Its totient is φ = 6187200.

The previous prime is 13840033. The next prime is 13840061. The reversal of 13840046 is 64004831.

13840046 = 446² + 447² + ... + 506².

It is a junction number, because it is equal to n+sod(n) for n = 13839997 and 13840024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3815 + ... + 6498.

It is an arithmetic number, because the mean of its divisors is an integer number (1438803).

Almost surely, 2^13840046 is an apocalyptic number.

13840046 is a deficient number, since it is larger than the sum of its proper divisors (9180802).

13840046 is a wasteful number, since it uses less digits than its factorization.

13840046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10387.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 13840046 is about 3720.2212299808. The cubic root of 13840046 is about 240.0928228913.

Adding to 13840046 its reverse (64004831), we get a palindrome (77844877).

The spelling of 13840046 in words is "thirteen million, eight hundred forty thousand, forty-six".