10813820 has 12 divisors (see below), whose sum is σ = 22709064. Its totient is φ = 4325520.

The previous prime is 10813813. The next prime is 10813861. The reversal of 10813820 is 2831801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270326 + ... + 270365.

It is an arithmetic number, because the mean of its divisors is an integer number (1892422).

Almost surely, 2^10813820 is an apocalyptic number.

10813820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10813820 is an abundant number, since it is smaller than the sum of its proper divisors (11895244).

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

10813820 is a wasteful number, since it uses less digits than its factorization.

10813820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540700 (or 540698 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 10813820 is about 3288.4373188492. The cubic root of 10813820 is about 221.1361336481.

The spelling of 10813820 in words is "ten million, eight hundred thirteen thousand, eight hundred twenty".