22788005 has 16 divisors (see below), whose sum is σ = 28350000. Its totient is φ = 17571840.

The previous prime is 22788001. The next prime is 22788013. The reversal of 22788005 is 50088722.

It can be written as a sum of positive squares in 8 ways, for example, as 6522916 + 16265089 = 2554^2 + 4033^2 .

It is not a de Polignac number, because 22788005 - 2² = 22788001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22788001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17621 + ... + 18869.

It is an arithmetic number, because the mean of its divisors is an integer number (1771875).

Almost surely, 2^22788005 is an apocalyptic number.

It is an amenable number.

22788005 is a deficient number, since it is larger than the sum of its proper divisors (5561995).

22788005 is a wasteful number, since it uses less digits than its factorization.

22788005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 22788005 is about 4773.6783511251. The cubic root of 22788005 is about 283.5102524424.

The spelling of 22788005 in words is "twenty-two million, seven hundred eighty-eight thousand, five".