20606788 has 24 divisors (see below), whose sum is σ = 38761632. Its totient is φ = 9550464.

The previous prime is 20606783. The next prime is 20606797. The reversal of 20606788 is 88760602.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20606783) 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, 2295 + ... + 6817.

It is an arithmetic number, because the mean of its divisors is an integer number (1615068).

Almost surely, 2^20606788 is an apocalyptic number.

It is an amenable number.

20606788 is a deficient number, since it is larger than the sum of its proper divisors (18154844).

20606788 is a wasteful number, since it uses less digits than its factorization.

20606788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611 (or 4609 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 20606788 is about 4539.4700131183. The cubic root of 20606788 is about 274.1595852278.

The spelling of 20606788 in words is "twenty million, six hundred six thousand, seven hundred eighty-eight".