20019288 has 16 divisors (see below), whose sum is σ = 50048280. Its totient is φ = 6673088.

The previous prime is 20019281. The next prime is 20019299. The reversal of 20019288 is 88291002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20019281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417045 + ... + 417092.

Almost surely, 2^20019288 is an apocalyptic number.

It is an amenable number.

20019288 is an abundant number, since it is smaller than the sum of its proper divisors (30028992).

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

20019288 is a wasteful number, since it uses less digits than its factorization.

20019288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834146 (or 834142 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 20019288 is about 4474.2918992842. The cubic root of 20019288 is about 271.5289931018.

The spelling of 20019288 in words is "twenty million, nineteen thousand, two hundred eighty-eight".