1218272 has 24 divisors (see below), whose sum is σ = 2617272. Its totient is φ = 553600.

The previous prime is 1218263. The next prime is 1218277. The reversal of 1218272 is 2728121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218277) 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, 1379 + ... + 2082.

It is an arithmetic number, because the mean of its divisors is an integer number (109053).

2^1218272 is an apocalyptic number.

It is an amenable number.

1218272 is an abundant number, since it is smaller than the sum of its proper divisors (1399000).

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

1218272 is a wasteful number, since it uses less digits than its factorization.

1218272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482 (or 3474 counting only the distinct ones).

The product of its digits is 448, while the sum is 23.

The square root of 1218272 is about 1103.7535956906. The cubic root of 1218272 is about 106.8025005610.

The spelling of 1218272 in words is "one million, two hundred eighteen thousand, two hundred seventy-two".