20601788 has 12 divisors (see below), whose sum is σ = 36270192. Its totient is φ = 10238880.

The previous prime is 20601781. The next prime is 20601817. The reversal of 20601788 is 88710602.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20601781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14753 + ... + 16088.

It is an arithmetic number, because the mean of its divisors is an integer number (3022516).

Almost surely, 2^20601788 is an apocalyptic number.

It is an amenable number.

20601788 is a deficient number, since it is larger than the sum of its proper divisors (15668404).

20601788 is a wasteful number, since it uses less digits than its factorization.

20601788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31012 (or 31010 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 20601788 is about 4538.9192546244. The cubic root of 20601788 is about 274.1374095446.

The spelling of 20601788 in words is "twenty million, six hundred one thousand, seven hundred eighty-eight".