20537104 has 40 divisors (see below), whose sum is σ = 47050560. Its totient is φ = 8496768.

The previous prime is 20537093. The next prime is 20537113. The reversal of 20537104 is 40173502.

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, 87 + ... + 6409.

It is an arithmetic number, because the mean of its divisors is an integer number (1176264).

Almost surely, 2^20537104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20537104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23525280).

20537104 is an abundant number, since it is smaller than the sum of its proper divisors (26513456).

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

20537104 is a wasteful number, since it uses less digits than its factorization.

20537104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6367 (or 6361 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20537104 is about 4531.7881680414. The cubic root of 20537104 is about 273.8502031649.

The spelling of 20537104 in words is "twenty million, five hundred thirty-seven thousand, one hundred four".