20201288 has 8 divisors (see below), whose sum is σ = 37877430. Its totient is φ = 10100640.

The previous prime is 20201273. The next prime is 20201303. The reversal of 20201288 is 88210202.

It is an interprime number because it is at equal distance from previous prime (20201273) and next prime (20201303).

It can be written as a sum of positive squares in only one way, i.e., 12124324 + 8076964 = 3482^2 + 2842^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262573 + ... + 1262588.

Almost surely, 2^20201288 is an apocalyptic number.

It is an amenable number.

20201288 is a deficient number, since it is larger than the sum of its proper divisors (17676142).

20201288 is a wasteful number, since it uses less digits than its factorization.

20201288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525167 (or 2525163 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 20201288 is about 4494.5842966842. The cubic root of 20201288 is about 272.3493564582.

The spelling of 20201288 in words is "twenty million, two hundred one thousand, two hundred eighty-eight".