20032404 has 24 divisors (see below), whose sum is σ = 53419968. Its totient is φ = 5723520.

The previous prime is 20032399. The next prime is 20032423. The reversal of 20032404 is 40423002.

It is a happy number.

It is a super-3 number, since 3×20032404³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

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, 119157 + ... + 119324.

It is an arithmetic number, because the mean of its divisors is an integer number (2225832).

Almost surely, 2^20032404 is an apocalyptic number.

It is an amenable number.

20032404 is an abundant number, since it is smaller than the sum of its proper divisors (33387564).

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

20032404 is a wasteful number, since it uses less digits than its factorization.

20032404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238495 (or 238493 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20032404 is about 4475.7573660778. The cubic root of 20032404 is about 271.5882792061.

Adding to 20032404 its reverse (40423002), we get a palindrome (60455406).

The spelling of 20032404 in words is "twenty million, thirty-two thousand, four hundred four".