20393448 has 16 divisors (see below), whose sum is σ = 50983680. Its totient is φ = 6797808.

The previous prime is 20393447. The next prime is 20393473. The reversal of 20393448 is 84439302.

It is not an unprimeable number, because it can be changed into a prime (20393447) 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, 424840 + ... + 424887.

It is an arithmetic number, because the mean of its divisors is an integer number (3186480).

Almost surely, 2^20393448 is an apocalyptic number.

It is an amenable number.

20393448 is an abundant number, since it is smaller than the sum of its proper divisors (30590232).

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

20393448 is a wasteful number, since it uses less digits than its factorization.

20393448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849736 (or 849732 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 20393448 is about 4515.9105394151. The cubic root of 20393448 is about 273.2101857840.

The spelling of 20393448 in words is "twenty million, three hundred ninety-three thousand, four hundred forty-eight".