13022887 has 4 divisors (see below), whose sum is σ = 13035096. Its totient is φ = 13010680.

The previous prime is 13022881. The next prime is 13022897. The reversal of 13022887 is 78822031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78822031 = 1907 ⋅41333.

It is a cyclic number.

It is not a de Polignac number, because 13022887 - 2³ = 13022879 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 (13022881) 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, 4333 + ... + 6694.

It is an arithmetic number, because the mean of its divisors is an integer number (3258774).

Almost surely, 2^13022887 is an apocalyptic number.

13022887 is a deficient number, since it is larger than the sum of its proper divisors (12209).

13022887 is a wasteful number, since it uses less digits than its factorization.

13022887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12208.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 13022887 is about 3608.7237356162. The cubic root of 13022887 is about 235.2713750457.

Subtracting from 13022887 its sum of digits (31), we obtain a triangular number (13022856 = T₅₁₀₃).

The spelling of 13022887 in words is "thirteen million, twenty-two thousand, eight hundred eighty-seven".