13016820 has 24 divisors (see below), whose sum is σ = 36447264. Its totient is φ = 3471136.

The previous prime is 13016819. The next prime is 13016867. The reversal of 13016820 is 2861031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108414 + ... + 108533.

It is an arithmetic number, because the mean of its divisors is an integer number (1518636).

Almost surely, 2^13016820 is an apocalyptic number.

13016820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13016820 is an abundant number, since it is smaller than the sum of its proper divisors (23430444).

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

13016820 is a wasteful number, since it uses less digits than its factorization.

13016820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216959 (or 216957 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 13016820 is about 3607.8830357981. The cubic root of 13016820 is about 235.2348339124.

Adding to 13016820 its reverse (2861031), we get a palindrome (15877851).

The spelling of 13016820 in words is "thirteen million, sixteen thousand, eight hundred twenty".