20032518 has 48 divisors (see below), whose sum is σ = 45179568. Its totient is φ = 5913600.

The previous prime is 20032513. The next prime is 20032543. The reversal of 20032518 is 81523002.

It is a junction number, because it is equal to n+sod(n) for n = 20032494 and 20032503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29430 + ... + 30102.

It is an arithmetic number, because the mean of its divisors is an integer number (941241).

Almost surely, 2^20032518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20032518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22589784).

20032518 is an abundant number, since it is smaller than the sum of its proper divisors (25147050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20032518 is a wasteful number, since it uses less digits than its factorization.

20032518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20032518 is about 4475.7701013345. The cubic root of 20032518 is about 271.5887943882.

The spelling of 20032518 in words is "twenty million, thirty-two thousand, five hundred eighteen".