1022390 has 16 divisors (see below), whose sum is σ = 1937520. Its totient is φ = 387360.

The previous prime is 1022389. The next prime is 1022429. The reversal of 1022390 is 932201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2501 + ... + 2880.

It is an arithmetic number, because the mean of its divisors is an integer number (121095).

2^1022390 is an apocalyptic number.

1022390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1022390 is a deficient number, since it is larger than the sum of its proper divisors (915130).

1022390 is a wasteful number, since it uses less digits than its factorization.

1022390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5407.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1022390 is about 1011.1330278455. The cubic root of 1022390 is about 100.7408314676.

Adding to 1022390 its reverse (932201), we get a palindrome (1954591).

The spelling of 1022390 in words is "one million, twenty-two thousand, three hundred ninety".