1216432 has 20 divisors (see below), whose sum is σ = 2693776. Its totient is φ = 521280.

The previous prime is 1216421. The next prime is 1216433. The reversal of 1216432 is 2346121.

It is not an unprimeable number, because it can be changed into a prime (1216433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5319 + ... + 5542.

2^1216432 is an apocalyptic number.

It is an amenable number.

1216432 is an abundant number, since it is smaller than the sum of its proper divisors (1477344).

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

1216432 is a wasteful number, since it uses less digits than its factorization.

1216432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10876 (or 10870 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 1216432 is about 1102.9197613607. The cubic root of 1216432 is about 106.7487042496.

The spelling of 1216432 in words is "one million, two hundred sixteen thousand, four hundred thirty-two".