1220814 has 24 divisors (see below), whose sum is σ = 3023280. Its totient is φ = 348768.

The previous prime is 1220803. The next prime is 1220819. The reversal of 1220814 is 4180221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4719 + ... + 4970.

It is an arithmetic number, because the mean of its divisors is an integer number (125970).

2^1220814 is an apocalyptic number.

1220814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1220814 is an abundant number, since it is smaller than the sum of its proper divisors (1802466).

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

1220814 is a wasteful number, since it uses less digits than its factorization.

1220814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9704 (or 9701 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1220814 is about 1104.9045207619. The cubic root of 1220814 is about 106.8767322998.

The spelling of 1220814 in words is "one million, two hundred twenty thousand, eight hundred fourteen".