13022856 has 224 divisors, whose sum is σ = 47217600. Its totient is φ = 3265920.

The previous prime is 13022831. The next prime is 13022861. The reversal of 13022856 is 65822031.

13022856 is a nontrivial binomial coefficient, being equal to C(5104, 2).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 in 55 ways as a sum of consecutive naturals, for example, 449050 + ... + 449078.

Almost surely, 2^13022856 is an apocalyptic number.

13022856 is the 5103-rd triangular number and also the 2552-nd hexagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13022856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23608800).

13022856 is an abundant number, since it is smaller than the sum of its proper divisors (34194744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13022856 is a wasteful number, since it uses less digits than its factorization.

13022856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 13022856 is about 3608.7194404664. The cubic root of 13022856 is about 235.2711883637.

Adding to 13022856 its reverse (65822031), we get a palindrome (78844887).

The spelling of 13022856 in words is "thirteen million, twenty-two thousand, eight hundred fifty-six".