20257322 has 16 divisors (see below), whose sum is σ = 31483392. Its totient is φ = 9765360.

The previous prime is 20257309. The next prime is 20257327. The reversal of 20257322 is 22375202.

It is a super-2 number, since 2×20257322² = 820718189223368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20257327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24203 + ... + 25025.

It is an arithmetic number, because the mean of its divisors is an integer number (1967712).

Almost surely, 2^20257322 is an apocalyptic number.

20257322 is a deficient number, since it is larger than the sum of its proper divisors (11226070).

20257322 is a wasteful number, since it uses less digits than its factorization.

20257322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 20257322 is about 4500.8134820274. The cubic root of 20257322 is about 272.6009367117.

The spelling of 20257322 in words is "twenty million, two hundred fifty-seven thousand, three hundred twenty-two".