20077243 has 16 divisors (see below), whose sum is σ = 22118400. Its totient is φ = 18152640.

The previous prime is 20077217. The next prime is 20077247. The reversal of 20077243 is 34277002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20077243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20077247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52230 + ... + 52612.

It is an arithmetic number, because the mean of its divisors is an integer number (1382400).

Almost surely, 2^20077243 is an apocalyptic number.

20077243 is a deficient number, since it is larger than the sum of its proper divisors (2041157).

20077243 is a wasteful number, since it uses less digits than its factorization.

20077243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 20077243 is about 4480.7636625915. The cubic root of 20077243 is about 271.7907623466.

The spelling of 20077243 in words is "twenty million, seventy-seven thousand, two hundred forty-three".