12719820 has 24 divisors (see below), whose sum is σ = 35615664. Its totient is φ = 3391936.

The previous prime is 12719809. The next prime is 12719821. The reversal of 12719820 is 2891721.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (12719821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105939 + ... + 106058.

It is an arithmetic number, because the mean of its divisors is an integer number (1483986).

Almost surely, 2^12719820 is an apocalyptic number.

12719820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12719820 is an abundant number, since it is smaller than the sum of its proper divisors (22895844).

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

12719820 is a wasteful number, since it uses less digits than its factorization.

12719820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212009 (or 212007 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12719820 is about 3566.4856651892. The cubic root of 12719820 is about 233.4319628388.

The spelling of 12719820 in words is "twelve million, seven hundred nineteen thousand, eight hundred twenty".