20322087 has 8 divisors (see below), whose sum is σ = 28274304. Its totient is φ = 12958968.

The previous prime is 20322083. The next prime is 20322103. The reversal of 20322087 is 78022302.

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

It is not a de Polignac number, because 20322087 - 2² = 20322083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322083) by changing a digit.

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, 147193 + ... + 147330.

It is an arithmetic number, because the mean of its divisors is an integer number (3534288).

Almost surely, 2^20322087 is an apocalyptic number.

20322087 is a deficient number, since it is larger than the sum of its proper divisors (7952217).

20322087 is a wasteful number, since it uses less digits than its factorization.

20322087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294549.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20322087 is about 4508.0025510197. The cubic root of 20322087 is about 272.8911398950.

Adding to 20322087 its reverse (78022302), we get a palindrome (98344389).

The spelling of 20322087 in words is "twenty million, three hundred twenty-two thousand, eighty-seven".