1228872 has 16 divisors (see below), whose sum is σ = 3072240. Its totient is φ = 409616.

The previous prime is 1228861. The next prime is 1228883. The reversal of 1228872 is 2788221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1228861) and next prime (1228883).

It is a d-powerful number, because it can be written as 1 + 2¹⁴ + 2¹⁷ + 8² + 8⁵ + 7 + 2²⁰ .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25578 + ... + 25625.

It is an arithmetic number, because the mean of its divisors is an integer number (192015).

2^1228872 is an apocalyptic number.

1228872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1228872 is an abundant number, since it is smaller than the sum of its proper divisors (1843368).

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

1228872 is a wasteful number, since it uses less digits than its factorization.

1228872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51212 (or 51208 counting only the distinct ones).

The product of its digits is 3584, while the sum is 30.

The square root of 1228872 is about 1108.5449923210. The cubic root of 1228872 is about 107.1113639503. Note that the first 3 decimals are identical.

It can be divided in two parts, 12288 and 72, that multiplied together give a cube (884736 = 96³).

The spelling of 1228872 in words is "one million, two hundred twenty-eight thousand, eight hundred seventy-two".