20328518 has 16 divisors (see below), whose sum is σ = 36683520. Its totient is φ = 8253576.

The previous prime is 20328479. The next prime is 20328533. The reversal of 20328518 is 81582302.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37946 + ... + 38477.

It is an arithmetic number, because the mean of its divisors is an integer number (2292720).

Almost surely, 2^20328518 is an apocalyptic number.

20328518 is a deficient number, since it is larger than the sum of its proper divisors (16355002).

20328518 is a wasteful number, since it uses less digits than its factorization.

20328518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76451.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 20328518 is about 4508.7157816833. The cubic root of 20328518 is about 272.9199226644.

The spelling of 20328518 in words is "twenty million, three hundred twenty-eight thousand, five hundred eighteen".