13438556 has 6 divisors (see below), whose sum is σ = 23517480. Its totient is φ = 6719276.

The previous prime is 13438553. The next prime is 13438559. The reversal of 13438556 is 65583431.

13438556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13438553) and next prime (13438559).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13438553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1679816 + ... + 1679823.

It is an arithmetic number, because the mean of its divisors is an integer number (3919580).

Almost surely, 2^13438556 is an apocalyptic number.

It is an amenable number.

13438556 is a deficient number, since it is larger than the sum of its proper divisors (10078924).

13438556 is a wasteful number, since it uses less digits than its factorization.

13438556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359643 (or 3359641 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 13438556 is about 3665.8636090286. The cubic root of 13438556 is about 237.7483629015.

The spelling of 13438556 in words is "thirteen million, four hundred thirty-eight thousand, five hundred fifty-six".