20104416 has 48 divisors (see below), whose sum is σ = 58640400. Its totient is φ = 6701184.

The previous prime is 20104397. The next prime is 20104423. The reversal of 20104416 is 61440102.

20104416 = T₄₁₅ + T₄₁₆ + ... + T₅₇₆.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 10771 + ... + 12498.

It is an arithmetic number, because the mean of its divisors is an integer number (1221675).

Almost surely, 2^20104416 is an apocalyptic number.

It is an amenable number.

20104416 is an abundant number, since it is smaller than the sum of its proper divisors (38535984).

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

20104416 is a wasteful number, since it uses less digits than its factorization.

20104416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23288 (or 23274 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20104416 is about 4483.7948213539. The cubic root of 20104416 is about 271.9133230164.

Adding to 20104416 its reverse (61440102), we get a palindrome (81544518).

The spelling of 20104416 in words is "twenty million, one hundred four thousand, four hundred sixteen".