20579104 has 96 divisors (see below), whose sum is σ = 51480576. Its totient is φ = 7879680.

The previous prime is 20579101. The next prime is 20579113. The reversal of 20579104 is 40197502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20579101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107649 + ... + 107839.

It is an arithmetic number, because the mean of its divisors is an integer number (536256).

Almost surely, 2^20579104 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 20579104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25740288).

20579104 is an abundant number, since it is smaller than the sum of its proper divisors (30901472).

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

20579104 is a wasteful number, since it uses less digits than its factorization.

20579104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 20579104 is about 4536.4197336666. The cubic root of 20579104 is about 274.0367578157.

The spelling of 20579104 in words is "twenty million, five hundred seventy-nine thousand, one hundred four".