12284220 has 48 divisors (see below), whose sum is σ = 37044000. Its totient is φ = 3023616.

The previous prime is 12284219. The next prime is 12284243. The reversal of 12284220 is 2248221.

It is a happy number.

It is a super-2 number, since 2×12284220² = 301804122016800, which contains 22 as substring.

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, 7095 + ... + 8654.

It is an arithmetic number, because the mean of its divisors is an integer number (771750).

Almost surely, 2^12284220 is an apocalyptic number.

12284220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12284220 is an abundant number, since it is smaller than the sum of its proper divisors (24759780).

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

12284220 is a wasteful number, since it uses less digits than its factorization.

12284220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15774 (or 15772 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 12284220 is about 3504.8851621701. The cubic root of 12284220 is about 230.7362669155.

The spelling of 12284220 in words is "twelve million, two hundred eighty-four thousand, two hundred twenty".