1226178 has 42 divisors (see below), whose sum is σ = 2856009. Its totient is φ = 394632.

The previous prime is 1226117. The next prime is 1226179. The reversal of 1226178 is 8716221.

It can be written as a sum of positive squares in 2 ways, for example, as 1225449 + 729 = 1107^2 + 27^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=783.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1226179) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 42268 + ... + 42296.

2^1226178 is an apocalyptic number.

1226178 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226178

1226178 is an abundant number, since it is smaller than the sum of its proper divisors (1629831).

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

1226178 is an frugal number, since it uses more digits than its factorization.

1226178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 34 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 1226178 is about 1107.3292193381. The cubic root of 1226178 is about 107.0330348984.

The spelling of 1226178 in words is "one million, two hundred twenty-six thousand, one hundred seventy-eight".