20104480 has 48 divisors (see below), whose sum is σ = 51819264. Its totient is φ = 7310080.

The previous prime is 20104433. The next prime is 20104493. The reversal of 20104480 is 8440102.

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, 3952 + ... + 7471.

It is an arithmetic number, because the mean of its divisors is an integer number (1079568).

Almost surely, 2^20104480 is an apocalyptic number.

20104480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20104480 is an abundant number, since it is smaller than the sum of its proper divisors (31714784).

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

20104480 is a wasteful number, since it uses less digits than its factorization.

20104480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11449 (or 11441 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 20104480 is about 4483.8019581601. The cubic root of 20104480 is about 271.9136115505.

Adding to 20104480 its reverse (8440102), we get a palindrome (28544582).

The spelling of 20104480 in words is "twenty million, one hundred four thousand, four hundred eighty".