1228272 has 20 divisors (see below), whose sum is σ = 3173160. Its totient is φ = 409408.

The previous prime is 1228247. The next prime is 1228273. The reversal of 1228272 is 2728221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228273) 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, 12747 + ... + 12842.

It is an arithmetic number, because the mean of its divisors is an integer number (158658).

2^1228272 is an apocalyptic number.

1228272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1228272 is an abundant number, since it is smaller than the sum of its proper divisors (1944888).

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

1228272 is a wasteful number, since it uses less digits than its factorization.

1228272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25600 (or 25594 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 1228272 is about 1108.2743342693. The cubic root of 1228272 is about 107.0939286435.

The spelling of 1228272 in words is "one million, two hundred twenty-eight thousand, two hundred seventy-two".