20247888 has 20 divisors (see below), whose sum is σ = 52307168. Its totient is φ = 6749280.

The previous prime is 20247881. The next prime is 20247893. The reversal of 20247888 is 88874202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20247881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210868 + ... + 210963.

Almost surely, 2^20247888 is an apocalyptic number.

It is an amenable number.

20247888 is an abundant number, since it is smaller than the sum of its proper divisors (32059280).

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

20247888 is a wasteful number, since it uses less digits than its factorization.

20247888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421842 (or 421836 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 20247888 is about 4499.7653272143. The cubic root of 20247888 is about 272.5586126480.

It can be divided in two parts, 202478 and 88, that added together give a triangular number (202566 = T₆₃₆).

The spelling of 20247888 in words is "twenty million, two hundred forty-seven thousand, eight hundred eighty-eight".