20073057 has 4 divisors (see below), whose sum is σ = 26764080. Its totient is φ = 13382036.

The previous prime is 20073041. The next prime is 20073071. The reversal of 20073057 is 75037002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20073057 - 2⁴ = 20073041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20073007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3345507 + ... + 3345512.

It is an arithmetic number, because the mean of its divisors is an integer number (6691020).

Almost surely, 2^20073057 is an apocalyptic number.

It is an amenable number.

20073057 is a deficient number, since it is larger than the sum of its proper divisors (6691023).

20073057 is an equidigital number, since it uses as much as digits as its factorization.

20073057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6691022.

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 20073057 is about 4480.2965303649. The cubic root of 20073057 is about 271.7718720503.

The spelling of 20073057 in words is "twenty million, seventy-three thousand, fifty-seven".