12214784 has 20 divisors (see below), whose sum is σ = 24406734. Its totient is φ = 6107136.

The previous prime is 12214759. The next prime is 12214793. The reversal of 12214784 is 48741221.

It can be written as a sum of positive squares in only one way, i.e., 12054784 + 160000 = 3472^2 + 400^2 .

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11417 + ... + 12440.

Almost surely, 2^12214784 is an apocalyptic number.

It is an amenable number.

12214784 is a deficient number, since it is larger than the sum of its proper divisors (12191950).

12214784 is an frugal number, since it uses more digits than its factorization.

12214784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23875 (or 23859 counting only the distinct ones).

The product of its digits is 3584, while the sum is 29.

The square root of 12214784 is about 3494.9655220045. The cubic root of 12214784 is about 230.3007030963.

The spelling of 12214784 in words is "twelve million, two hundred fourteen thousand, seven hundred eighty-four".