1222790 has 8 divisors (see below), whose sum is σ = 2201040. Its totient is φ = 489112.

The previous prime is 1222789. The next prime is 1222801. The reversal of 1222790 is 972221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

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, 61130 + ... + 61149.

It is an arithmetic number, because the mean of its divisors is an integer number (275130).

2^1222790 is an apocalyptic number.

1222790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222790 is a deficient number, since it is larger than the sum of its proper divisors (978250).

1222790 is a wasteful number, since it uses less digits than its factorization.

1222790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122286.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1222790 is about 1105.7983541315. The cubic root of 1222790 is about 106.9343644979.

The spelling of 1222790 in words is "one million, two hundred twenty-two thousand, seven hundred ninety".