13163820 has 48 divisors (see below), whose sum is σ = 38465280. Its totient is φ = 3357376.

The previous prime is 13163803. The next prime is 13163833. The reversal of 13163820 is 2836131.

13163820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×13163820³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3390 + ... + 6149.

It is an arithmetic number, because the mean of its divisors is an integer number (801360).

Almost surely, 2^13163820 is an apocalyptic number.

13163820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13163820 is an abundant number, since it is smaller than the sum of its proper divisors (25301460).

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

13163820 is a wasteful number, since it uses less digits than its factorization.

13163820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9574 (or 9572 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 13163820 is about 3628.1978997844. The cubic root of 13163820 is about 236.1170299580.

Adding to 13163820 its reverse (2836131), we get a palindrome (15999951).

The spelling of 13163820 in words is "thirteen million, one hundred sixty-three thousand, eight hundred twenty".