12995220 has 48 divisors (see below), whose sum is σ = 41586048. Its totient is φ = 2970240.

The previous prime is 12995197. The next prime is 12995233. The reversal of 12995220 is 2259921.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15051 + ... + 15890.

It is an arithmetic number, because the mean of its divisors is an integer number (866376).

Almost surely, 2^12995220 is an apocalyptic number.

12995220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12995220 is an abundant number, since it is smaller than the sum of its proper divisors (28590828).

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

12995220 is a wasteful number, since it uses less digits than its factorization.

12995220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30960 (or 30958 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 12995220 is about 3604.8883477855. Note that the first 3 decimals coincide. The cubic root of 12995220 is about 235.1046463166.

The spelling of 12995220 in words is "twelve million, nine hundred ninety-five thousand, two hundred twenty".