20580448 has 48 divisors (see below), whose sum is σ = 46932480. Its totient is φ = 8701056.

The previous prime is 20580437. The next prime is 20580463. The reversal of 20580448 is 84408502.

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, 17115 + ... + 18277.

It is an arithmetic number, because the mean of its divisors is an integer number (977760).

Almost surely, 2^20580448 is an apocalyptic number.

20580448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20580448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23466240).

20580448 is an abundant number, since it is smaller than the sum of its proper divisors (26352032).

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

20580448 is a wasteful number, since it uses less digits than its factorization.

20580448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 20580448 is about 4536.5678656888. The cubic root of 20580448 is about 274.0427233716.

The spelling of 20580448 in words is "twenty million, five hundred eighty thousand, four hundred forty-eight".