20057518 has 32 divisors (see below), whose sum is σ = 35816256. Its totient is φ = 8329728.

The previous prime is 20057509. The next prime is 20057519. The reversal of 20057518 is 81575002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20057519) 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, 9180 + ... + 11152.

It is an arithmetic number, because the mean of its divisors is an integer number (1119258).

Almost surely, 2^20057518 is an apocalyptic number.

20057518 is a deficient number, since it is larger than the sum of its proper divisors (15758738).

20057518 is a wasteful number, since it uses less digits than its factorization.

20057518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 20057518 is about 4478.5620460143. The cubic root of 20057518 is about 271.7017257291.

The spelling of 20057518 in words is "twenty million, fifty-seven thousand, five hundred eighteen".