20322146 has 16 divisors (see below), whose sum is σ = 33123384. Its totient is φ = 9295104.

The previous prime is 20322131. The next prime is 20322163. The reversal of 20322146 is 64122302.

It can be written as a sum of positive squares in 4 ways, for example, as 9066121 + 11256025 = 3011^2 + 3355^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521 + ... + 6396.

Almost surely, 2^20322146 is an apocalyptic number.

20322146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20322146 is a deficient number, since it is larger than the sum of its proper divisors (12801238).

20322146 is a wasteful number, since it uses less digits than its factorization.

20322146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7045.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20322146 is about 4508.0090949332. The cubic root of 20322146 is about 272.8914039847.

Adding to 20322146 its reverse (64122302), we get a palindrome (84444448).

The spelling of 20322146 in words is "twenty million, three hundred twenty-two thousand, one hundred forty-six".