1322290 has 8 divisors (see below), whose sum is σ = 2380140. Its totient is φ = 528912.

The previous prime is 1322287. The next prime is 1322303. The reversal of 1322290 is 922231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1238769 + 83521 = 1113^2 + 289^2 .

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

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, 66105 + ... + 66124.

2^1322290 is an apocalyptic number.

1322290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1322290 is a deficient number, since it is larger than the sum of its proper divisors (1057850).

1322290 is a wasteful number, since it uses less digits than its factorization.

1322290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132236.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1322290 is about 1149.9086920273. The cubic root of 1322290 is about 109.7595297893.

The spelling of 1322290 in words is "one million, three hundred twenty-two thousand, two hundred ninety".