20270043 has 24 divisors (see below), whose sum is σ = 31122000. Its totient is φ = 12688704.

The previous prime is 20270039. The next prime is 20270051. The reversal of 20270043 is 34007202.

It is a happy number.

It is not a de Polignac number, because 20270043 - 2² = 20270039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20269998 and 20270025.

It is not an unprimeable number, because it can be changed into a prime (20270083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8608 + ... + 10706.

It is an arithmetic number, because the mean of its divisors is an integer number (1296750).

Almost surely, 2^20270043 is an apocalyptic number.

20270043 is a deficient number, since it is larger than the sum of its proper divisors (10851957).

20270043 is a wasteful number, since it uses less digits than its factorization.

20270043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171 (or 2168 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 20270043 is about 4502.2264492138. The cubic root of 20270043 is about 272.6579865509.

Adding to 20270043 its reverse (34007202), we get a palindrome (54277245).

The spelling of 20270043 in words is "twenty million, two hundred seventy thousand, forty-three".