12693820 has 24 divisors (see below), whose sum is σ = 27057744. Its totient is φ = 5001216.

The previous prime is 12693817. The next prime is 12693839. The reversal of 12693820 is 2839621.

It is a super-2 number, since 2×12693820² = 322266132384800, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 3397 + ... + 6076.

It is an arithmetic number, because the mean of its divisors is an integer number (1127406).

Almost surely, 2^12693820 is an apocalyptic number.

12693820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12693820 is an abundant number, since it is smaller than the sum of its proper divisors (14363924).

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

12693820 is a wasteful number, since it uses less digits than its factorization.

12693820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9549 (or 9547 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 12693820 is about 3562.8387558238. The cubic root of 12693820 is about 233.2728051616.

The spelling of 12693820 in words is "twelve million, six hundred ninety-three thousand, eight hundred twenty".