20288440104 has 16 divisors (see below), whose sum is σ = 50721100320. Its totient is φ = 6762813360.

The previous prime is 20288440091. The next prime is 20288440129. The reversal of 20288440104 is 40104488202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422675812 + ... + 422675859.

It is an arithmetic number, because the mean of its divisors is an integer number (3170068770).

Almost surely, 2^20288440104 is an apocalyptic number.

20288440104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20288440104 is an abundant number, since it is smaller than the sum of its proper divisors (30432660216).

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

20288440104 is a wasteful number, since it uses less digits than its factorization.

20288440104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845351680 (or 845351676 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 33.

The spelling of 20288440104 in words is "twenty billion, two hundred eighty-eight million, four hundred forty thousand, one hundred four".