20432448 has 84 divisors (see below), whose sum is σ = 61681360. Its totient is φ = 6448896.

The previous prime is 20432437. The next prime is 20432449. The reversal of 20432448 is 84423402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20432449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10011 + ... + 11877.

Almost surely, 2^20432448 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 20432448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30840680).

20432448 is an abundant number, since it is smaller than the sum of its proper divisors (41248912).

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

20432448 is a wasteful number, since it uses less digits than its factorization.

20432448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904 (or 1891 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 20432448 is about 4520.2265429954. The cubic root of 20432448 is about 273.3842353479.

The spelling of 20432448 in words is "twenty million, four hundred thirty-two thousand, four hundred forty-eight".