1222760 has 64 divisors (see below), whose sum is σ = 3438720. Its totient is φ = 380160.

The previous prime is 1222757. The next prime is 1222769. The reversal of 1222760 is 672221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2882 + ... + 3278.

It is an arithmetic number, because the mean of its divisors is an integer number (53730).

2^1222760 is an apocalyptic number.

1222760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1719360).

1222760 is an abundant number, since it is smaller than the sum of its proper divisors (2215960).

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

1222760 is a wasteful number, since it uses less digits than its factorization.

1222760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 1222760 is about 1105.7847891882. The cubic root of 1222760 is about 106.9334899794.

Adding to 1222760 its reverse (672221), we get a palindrome (1894981).

It can be divided in two parts, 122 and 2760, that added together give a palindrome (2882).

The spelling of 1222760 in words is "one million, two hundred twenty-two thousand, seven hundred sixty".