20199504 has 40 divisors (see below), whose sum is σ = 56197792. Its totient is φ = 6215040.

The previous prime is 20199503. The next prime is 20199523. The reversal of 20199504 is 40599102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20199503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15562 + ... + 16809.

Almost surely, 2^20199504 is an apocalyptic number.

20199504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20199504 is an abundant number, since it is smaller than the sum of its proper divisors (35998288).

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

20199504 is a wasteful number, since it uses less digits than its factorization.

20199504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32395 (or 32389 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 20199504 is about 4494.3858312343. The cubic root of 20199504 is about 272.3413390560.

The spelling of 20199504 in words is "twenty million, one hundred ninety-nine thousand, five hundred four".