13640054 has 16 divisors (see below), whose sum is σ = 20901888. Its totient is φ = 6674472.

The previous prime is 13640047. The next prime is 13640071. The reversal of 13640054 is 45004631.

It is a happy number.

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, 20759 + ... + 21405.

It is an arithmetic number, because the mean of its divisors is an integer number (1306368).

Almost surely, 2^13640054 is an apocalyptic number.

13640054 is a deficient number, since it is larger than the sum of its proper divisors (7261834).

13640054 is a wasteful number, since it uses less digits than its factorization.

13640054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 13640054 is about 3693.2443731765. The cubic root of 13640054 is about 238.9307409477.

Adding to 13640054 its reverse (45004631), we get a palindrome (58644685).

The spelling of 13640054 in words is "thirteen million, six hundred forty thousand, fifty-four".