20065788 has 36 divisors (see below), whose sum is σ = 50869000. Its totient is φ = 6669216.

The previous prime is 20065781. The next prime is 20065811. The reversal of 20065788 is 88756002.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20065781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17406 + ... + 18522.

Almost surely, 2^20065788 is an apocalyptic number.

It is an amenable number.

20065788 is an abundant number, since it is smaller than the sum of its proper divisors (30803212).

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

20065788 is a wasteful number, since it uses less digits than its factorization.

20065788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626 (or 1621 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 20065788 is about 4479.4852382835. The cubic root of 20065788 is about 271.7390627602.

The spelling of 20065788 in words is "twenty million, sixty-five thousand, seven hundred eighty-eight".