13422887 has 4 divisors (see below), whose sum is σ = 13505400. Its totient is φ = 13340376.

The previous prime is 13422883. The next prime is 13422917. The reversal of 13422887 is 78822431.

13422887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13422887 - 2² = 13422883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13422881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41012 + ... + 41337.

It is an arithmetic number, because the mean of its divisors is an integer number (3376350).

Almost surely, 2^13422887 is an apocalyptic number.

13422887 is a deficient number, since it is larger than the sum of its proper divisors (82513).

13422887 is an equidigital number, since it uses as much as digits as its factorization.

13422887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82512.

The product of its digits is 21504, while the sum is 35.

The square root of 13422887 is about 3663.7258358125. The cubic root of 13422887 is about 237.6559242026.

The spelling of 13422887 in words is "thirteen million, four hundred twenty-two thousand, eight hundred eighty-seven".