20006590 has 8 divisors (see below), whose sum is σ = 36011880. Its totient is φ = 8002632.

The previous prime is 20006579. The next prime is 20006611. The reversal of 20006590 is 9560002.

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

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 3 ways as a sum of consecutive naturals, for example, 1000320 + ... + 1000339.

It is an arithmetic number, because the mean of its divisors is an integer number (4501485).

Almost surely, 2^20006590 is an apocalyptic number.

20006590 is a deficient number, since it is larger than the sum of its proper divisors (16005290).

20006590 is a wasteful number, since it uses less digits than its factorization.

20006590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000666.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 20006590 is about 4472.8726787155. The cubic root of 20006590 is about 271.4715717391.

Adding to 20006590 its reverse (9560002), we get a palindrome (29566592).

The spelling of 20006590 in words is "twenty million, six thousand, five hundred ninety".