20006588 has 12 divisors (see below), whose sum is σ = 40013232. Its totient is φ = 8574240.

The previous prime is 20006579. The next prime is 20006611. The reversal of 20006588 is 88560002.

It is a happy number.

20006588 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20006588.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357233 + ... + 357288.

It is an arithmetic number, because the mean of its divisors is an integer number (3334436).

Almost surely, 2^20006588 is an apocalyptic number.

20006588 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20006588 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20006588 is a wasteful number, since it uses less digits than its factorization.

20006588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714532 (or 714530 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 20006588 is about 4472.8724551456. The cubic root of 20006588 is about 271.4715626930.

The spelling of 20006588 in words is "twenty million, six thousand, five hundred eighty-eight".