20432446 has 8 divisors (see below), whose sum is σ = 30804840. Its totient is φ = 10164168.

The previous prime is 20432437. The next prime is 20432449. The reversal of 20432446 is 64423402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20432446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432449) 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, 25536 + ... + 26323.

It is an arithmetic number, because the mean of its divisors is an integer number (3850605).

Almost surely, 2^20432446 is an apocalyptic number.

20432446 is a deficient number, since it is larger than the sum of its proper divisors (10372394).

20432446 is a wasteful number, since it uses less digits than its factorization.

20432446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52058.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 20432446 is about 4520.2263217675. The cubic root of 20432446 is about 273.3842264280.

Adding to 20432446 its reverse (64423402), we get a palindrome (84855848).

It can be divided in two parts, 2043 and 2446, that added together give a square (4489 = 67²).

The spelling of 20432446 in words is "twenty million, four hundred thirty-two thousand, four hundred forty-six".