12723820 has 24 divisors (see below), whose sum is σ = 28292544. Its totient is φ = 4790016.

The previous prime is 12723797. The next prime is 12723833. The reversal of 12723820 is 2832721.

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, 18372 + ... + 19051.

It is an arithmetic number, because the mean of its divisors is an integer number (1178856).

Almost surely, 2^12723820 is an apocalyptic number.

12723820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12723820 is an abundant number, since it is smaller than the sum of its proper divisors (15568724).

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

12723820 is a wasteful number, since it uses less digits than its factorization.

12723820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37449 (or 37447 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 12723820 is about 3567.0463972312. The cubic root of 12723820 is about 233.4564293798.

The spelling of 12723820 in words is "twelve million, seven hundred twenty-three thousand, eight hundred twenty".