20422588 has 12 divisors (see below), whose sum is σ = 35771400. Its totient is φ = 10202192.

The previous prime is 20422579. The next prime is 20422601. The reversal of 20422588 is 88522402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6738 + ... + 9286.

It is an arithmetic number, because the mean of its divisors is an integer number (2980950).

Almost surely, 2^20422588 is an apocalyptic number.

It is an amenable number.

20422588 is a deficient number, since it is larger than the sum of its proper divisors (15348812).

20422588 is a wasteful number, since it uses less digits than its factorization.

20422588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556 (or 4554 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 20422588 is about 4519.1357580847. The cubic root of 20422588 is about 273.3402529810.

The spelling of 20422588 in words is "twenty million, four hundred twenty-two thousand, five hundred eighty-eight".