20593648 has 40 divisors (see below), whose sum is σ = 42104448. Its totient is φ = 9738432.

The previous prime is 20593633. The next prime is 20593649. The reversal of 20593648 is 84639502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20593649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39115 + ... + 39637.

Almost surely, 2^20593648 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 20593648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21052224).

20593648 is an abundant number, since it is smaller than the sum of its proper divisors (21510800).

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

20593648 is a wasteful number, since it uses less digits than its factorization.

20593648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 20593648 is about 4538.0224768064. The cubic root of 20593648 is about 274.1012998556.

The spelling of 20593648 in words is "twenty million, five hundred ninety-three thousand, six hundred forty-eight".