20443028 has 36 divisors (see below), whose sum is σ = 38045280. Its totient is φ = 9607584.

The previous prime is 20443019. The next prime is 20443037. The reversal of 20443028 is 82034402.

It is an interprime number because it is at equal distance from previous prime (20443019) and next prime (20443037).

It is a zygodrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 20442994 and 20443012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198425 + ... + 198527.

Almost surely, 2^20443028 is an apocalyptic number.

It is an amenable number.

20443028 is a deficient number, since it is larger than the sum of its proper divisors (17602252).

20443028 is a wasteful number, since it uses less digits than its factorization.

20443028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 20443028 is about 4521.3966868657. The cubic root of 20443028 is about 273.4314136746.

The spelling of 20443028 in words is "twenty million, four hundred forty-three thousand, twenty-eight".