20288151 has 20 divisors (see below), whose sum is σ = 32639992. Its totient is φ = 12484368.

The previous prime is 20288141. The next prime is 20288159. The reversal of 20288151 is 15188202.

It is not a de Polignac number, because 20288151 - 2⁵ = 20288119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20288159) 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 19 ways as a sum of consecutive naturals, for example, 8581 + ... + 10686.

Almost surely, 2^20288151 is an apocalyptic number.

20288151 is a deficient number, since it is larger than the sum of its proper divisors (12351841).

20288151 is a wasteful number, since it uses less digits than its factorization.

20288151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19292 (or 19283 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 20288151 is about 4504.2370053096. The cubic root of 20288151 is about 272.7391543005.

The spelling of 20288151 in words is "twenty million, two hundred eighty-eight thousand, one hundred fifty-one".