20088424 has 16 divisors (see below), whose sum is σ = 39881700. Its totient is φ = 9453312.

The previous prime is 20088391. The next prime is 20088427. The reversal of 20088424 is 42488002.

It can be written as a sum of positive squares in 2 ways, for example, as 20088324 + 100 = 4482^2 + 10^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20088392 and 20088401.

It is not an unprimeable number, because it can be changed into a prime (20088427) 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, 73719 + ... + 73990.

Almost surely, 2^20088424 is an apocalyptic number.

It is an amenable number.

20088424 is a deficient number, since it is larger than the sum of its proper divisors (19793276).

20088424 is a wasteful number, since it uses less digits than its factorization.

20088424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147732 (or 147728 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 20088424 is about 4482.0111557202. The cubic root of 20088424 is about 271.8412063339.

The spelling of 20088424 in words is "twenty million, eighty-eight thousand, four hundred twenty-four".