20242404 has 144 divisors (see below), whose sum is σ = 65065728. Its totient is φ = 5163264.

The previous prime is 20242373. The next prime is 20242433. The reversal of 20242404 is 40424202.

20242404 is a `hidden beast` number, since 20 + 242 + 404 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 121129 + ... + 121295.

Almost surely, 2^20242404 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 20242404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32532864).

20242404 is an abundant number, since it is smaller than the sum of its proper divisors (44823324).

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

20242404 is a wasteful number, since it uses less digits than its factorization.

20242404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 20242404 is about 4499.1559208367. The cubic root of 20242404 is about 272.5340035563.

Adding to 20242404 its reverse (40424202), we get a palindrome (60666606).

The spelling of 20242404 in words is "twenty million, two hundred forty-two thousand, four hundred four".