1228851 has 24 divisors (see below), whose sum is σ = 1987440. Its totient is φ = 754272.

The previous prime is 1228849. The next prime is 1228861. The reversal of 1228851 is 1588221.

It is not a de Polignac number, because 1228851 - 2¹ = 1228849 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1228841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2965 + ... + 3353.

It is an arithmetic number, because the mean of its divisors is an integer number (82810).

2^1228851 is an apocalyptic number.

1228851 is a deficient number, since it is larger than the sum of its proper divisors (758589).

1228851 is an equidigital number, since it uses as much as digits as its factorization.

1228851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 405 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 1228851 is about 1108.5355204052. The cubic root of 1228851 is about 107.1107538104.

The spelling of 1228851 in words is "one million, two hundred twenty-eight thousand, eight hundred fifty-one".