12355216 has 20 divisors (see below), whose sum is σ = 24006400. Its totient is φ = 6160032.

The previous prime is 12355199. The next prime is 12355223. The reversal of 12355216 is 61255321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6145 + ... + 7903.

It is an arithmetic number, because the mean of its divisors is an integer number (1200320).

Almost surely, 2^12355216 is an apocalyptic number.

12355216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12355216 is a deficient number, since it is larger than the sum of its proper divisors (11651184).

12355216 is a wasteful number, since it uses less digits than its factorization.

12355216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206 (or 2200 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 12355216 is about 3514.9987197722. The cubic root of 12355216 is about 231.1799226668.

The spelling of 12355216 in words is "twelve million, three hundred fifty-five thousand, two hundred sixteen".