20087488 has 56 divisors (see below), whose sum is σ = 42062400. Its totient is φ = 9504768.

The previous prime is 20087479. The next prime is 20087497. The reversal of 20087488 is 88478002.

It is an interprime number because it is at equal distance from previous prime (20087479) and next prime (20087497).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146556 + ... + 146692.

Almost surely, 2^20087488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20087488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21031200).

20087488 is an abundant number, since it is smaller than the sum of its proper divisors (21974912).

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

20087488 is a wasteful number, since it uses less digits than its factorization.

20087488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 20087488 is about 4481.9067370930. The cubic root of 20087488 is about 271.8369842120.

The spelling of 20087488 in words is "twenty million, eighty-seven thousand, four hundred eighty-eight".