20580064 has 24 divisors (see below), whose sum is σ = 42901488. Its totient is φ = 9684480.

The previous prime is 20580061. The next prime is 20580067. The reversal of 20580064 is 46008502.

It is an interprime number because it is at equal distance from previous prime (20580061) and next prime (20580067).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20580061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18372 + ... + 19459.

It is an arithmetic number, because the mean of its divisors is an integer number (1787562).

Almost surely, 2^20580064 is an apocalyptic number.

It is an amenable number.

20580064 is an abundant number, since it is smaller than the sum of its proper divisors (22321424).

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

20580064 is a wasteful number, since it uses less digits than its factorization.

20580064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37858 (or 37850 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 20580064 is about 4536.5255427474. The cubic root of 20580064 is about 274.0410189536.

Adding to 20580064 its reverse (46008502), we get a palindrome (66588566).

The spelling of 20580064 in words is "twenty million, five hundred eighty thousand, sixty-four".