13890146 has 8 divisors (see below), whose sum is σ = 20873424. Its totient is φ = 6932340.

The previous prime is 13890143. The next prime is 13890157. The reversal of 13890146 is 64109831.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13890143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4940 + ... + 7223.

It is an arithmetic number, because the mean of its divisors is an integer number (2609178).

Almost surely, 2^13890146 is an apocalyptic number.

13890146 is a deficient number, since it is larger than the sum of its proper divisors (6983278).

13890146 is a wasteful number, since it uses less digits than its factorization.

13890146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12736.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 13890146 is about 3726.9486178374. The cubic root of 13890146 is about 240.3821804376.

Adding to 13890146 its reverse (64109831), we get a palindrome (77999977).

The spelling of 13890146 in words is "thirteen million, eight hundred ninety thousand, one hundred forty-six".