13840556 has 6 divisors (see below), whose sum is σ = 24220980. Its totient is φ = 6920276.

The previous prime is 13840523. The next prime is 13840559. The reversal of 13840556 is 65504831.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13840559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1730066 + ... + 1730073.

It is an arithmetic number, because the mean of its divisors is an integer number (4036830).

Almost surely, 2^13840556 is an apocalyptic number.

It is an amenable number.

13840556 is a deficient number, since it is larger than the sum of its proper divisors (10380424).

13840556 is a wasteful number, since it uses less digits than its factorization.

13840556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460143 (or 3460141 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 13840556 is about 3720.2897736601. The cubic root of 13840556 is about 240.0957719623.

The spelling of 13840556 in words is "thirteen million, eight hundred forty thousand, five hundred fifty-six".