13422287 has 6 divisors (see below), whose sum is σ = 13870224. Its totient is φ = 12988380.

The previous prime is 13422281. The next prime is 13422289. The reversal of 13422287 is 78222431.

It is not a de Polignac number, because 13422287 - 2⁶ = 13422223 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 (13422281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6023 + ... + 7944.

It is an arithmetic number, because the mean of its divisors is an integer number (2311704).

Almost surely, 2^13422287 is an apocalyptic number.

13422287 is a deficient number, since it is larger than the sum of its proper divisors (447937).

13422287 is an equidigital number, since it uses as much as digits as its factorization.

13422287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14029 (or 13998 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 13422287 is about 3663.6439510411. The cubic root of 13422287 is about 237.6523830945.

The spelling of 13422287 in words is "thirteen million, four hundred twenty-two thousand, two hundred eighty-seven".