20408192 has 32 divisors (see below), whose sum is σ = 46467120. Its totient is φ = 8745984.

The previous prime is 20408191. The next prime is 20408231. The reversal of 20408192 is 29180402.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20408191) 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, 10493 + ... + 12284.

Almost surely, 2^20408192 is an apocalyptic number.

It is an amenable number.

20408192 is an abundant number, since it is smaller than the sum of its proper divisors (26058928).

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

20408192 is an equidigital number, since it uses as much as digits as its factorization.

20408192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22798 (or 22786 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 20408192 is about 4517.5426948730. The cubic root of 20408192 is about 273.2760115106.

Adding to 20408192 its reverse (29180402), we get a palindrome (49588594).

The spelling of 20408192 in words is "twenty million, four hundred eight thousand, one hundred ninety-two".