2020432557 has 32 divisors (see below), whose sum is σ = 3224624256. Its totient is φ = 1108972800.

The previous prime is 2020432553. The next prime is 2020432559. The reversal of 2020432557 is 7552340202.

It is not a de Polignac number, because 2020432557 - 2² = 2020432553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020432553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21694 + ... + 67167.

It is an arithmetic number, because the mean of its divisors is an integer number (100769508).

Almost surely, 2^2020432557 is an apocalyptic number.

It is an amenable number.

2020432557 is a deficient number, since it is larger than the sum of its proper divisors (1204191699).

2020432557 is a wasteful number, since it uses less digits than its factorization.

2020432557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88941.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 2020432557 is about 44949.2219843681. The cubic root of 2020432557 is about 1264.1970891616.

Adding to 2020432557 its reverse (7552340202), we get a palindrome (9572772759).

The spelling of 2020432557 in words is "two billion, twenty million, four hundred thirty-two thousand, five hundred fifty-seven".