20443059 has 48 divisors (see below), whose sum is σ = 36836800. Its totient is φ = 10637568.

The previous prime is 20443039. The next prime is 20443081. The reversal of 20443059 is 95034402.

It is a de Polignac number, because none of the positive numbers 2^k-20443059 is a prime.

It is a super-2 number, since 2×20443059² = 835837322554962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20443009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89157 + ... + 89385.

Almost surely, 2^20443059 is an apocalyptic number.

20443059 is a deficient number, since it is larger than the sum of its proper divisors (16393741).

20443059 is a wasteful number, since it uses less digits than its factorization.

20443059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20443059 is about 4521.4001150086. The cubic root of 20443059 is about 273.4315518858.

The spelling of 20443059 in words is "twenty million, four hundred forty-three thousand, fifty-nine".