20400096 has 24 divisors (see below), whose sum is σ = 53550504. Its totient is φ = 6800000.

The previous prime is 20400089. The next prime is 20400101. The reversal of 20400096 is 69000402.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106155 + ... + 106346.

It is an arithmetic number, because the mean of its divisors is an integer number (2231271).

Almost surely, 2^20400096 is an apocalyptic number.

It is an amenable number.

20400096 is an abundant number, since it is smaller than the sum of its proper divisors (33150408).

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

20400096 is a wasteful number, since it uses less digits than its factorization.

20400096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212514 (or 212506 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20400096 is about 4516.6465436206. The cubic root of 20400096 is about 273.2398702197.

Adding to 20400096 its reverse (69000402), we get a palindrome (89400498).

The spelling of 20400096 in words is "twenty million, four hundred thousand, ninety-six".