1216392 has 16 divisors (see below), whose sum is σ = 3041040. Its totient is φ = 405456.

The previous prime is 1216387. The next prime is 1216393. The reversal of 1216392 is 2936121.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 50683 = 1216392 / (1 + 2 + 1 + 6 + 3 + 9 + 2).

It is not an unprimeable number, because it can be changed into a prime (1216393) 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, 25318 + ... + 25365.

It is an arithmetic number, because the mean of its divisors is an integer number (190065).

2^1216392 is an apocalyptic number.

1216392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1216392 is an abundant number, since it is smaller than the sum of its proper divisors (1824648).

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

1216392 is a wasteful number, since it uses less digits than its factorization.

1216392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50692 (or 50688 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

The square root of 1216392 is about 1102.9016275262. The cubic root of 1216392 is about 106.7475341623.

The spelling of 1216392 in words is "one million, two hundred sixteen thousand, three hundred ninety-two".