20443532 has 6 divisors (see below), whose sum is σ = 35776188. Its totient is φ = 10221764.

The previous prime is 20443529. The next prime is 20443561. The reversal of 20443532 is 23534402.

It is a junction number, because it is equal to n+sod(n) for n = 20443498 and 20443507.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555438 + ... + 2555445.

It is an arithmetic number, because the mean of its divisors is an integer number (5962698).

Almost surely, 2^20443532 is an apocalyptic number.

It is an amenable number.

20443532 is a deficient number, since it is larger than the sum of its proper divisors (15332656).

20443532 is a wasteful number, since it uses less digits than its factorization.

20443532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110887 (or 5110885 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 20443532 is about 4521.4524215124. The cubic root of 20443532 is about 273.4336607047.

Adding to 20443532 its reverse (23534402), we get a palindrome (43977934).

The spelling of 20443532 in words is "twenty million, four hundred forty-three thousand, five hundred thirty-two".