20601288 has 24 divisors (see below), whose sum is σ = 55795350. Its totient is φ = 6867072.

The previous prime is 20601283. The next prime is 20601319. The reversal of 20601288 is 88210602.

It can be written as a sum of positive squares in only one way, i.e., 19342404 + 1258884 = 4398^2 + 1122^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20601283) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142993 + ... + 143136.

Almost surely, 2^20601288 is an apocalyptic number.

It is an amenable number.

20601288 is an abundant number, since it is smaller than the sum of its proper divisors (35194062).

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

20601288 is a wasteful number, since it uses less digits than its factorization.

20601288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286141 (or 286134 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 20601288 is about 4538.8641750993. The cubic root of 20601288 is about 274.1351917789.

The spelling of 20601288 in words is "twenty million, six hundred one thousand, two hundred eighty-eight".