12919220 has 24 divisors (see below), whose sum is σ = 27343008. Its totient is φ = 5127200.

The previous prime is 12919211. The next prime is 12919241. The reversal of 12919220 is 2291921.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12919220.

It is a congruent number.

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, 155 + ... + 5085.

It is an arithmetic number, because the mean of its divisors is an integer number (1139292).

Almost surely, 2^12919220 is an apocalyptic number.

12919220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12919220 is an abundant number, since it is smaller than the sum of its proper divisors (14423788).

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

12919220 is a wasteful number, since it uses less digits than its factorization.

12919220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071 (or 5069 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 12919220 is about 3594.3316485823. The cubic root of 12919220 is about 234.6454287698.

The spelling of 12919220 in words is "twelve million, nine hundred nineteen thousand, two hundred twenty".