20524230 has 48 divisors (see below), whose sum is σ = 53936064. Its totient is φ = 5414400.

The previous prime is 20524223. The next prime is 20524241. The reversal of 20524230 is 3242502.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 7555 + ... + 9905.

It is an arithmetic number, because the mean of its divisors is an integer number (1123668).

Almost surely, 2^20524230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20524230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26968032).

20524230 is an abundant number, since it is smaller than the sum of its proper divisors (33411834).

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

20524230 is a wasteful number, since it uses less digits than its factorization.

20524230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461 (or 2458 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 20524230 is about 4530.3675347592. The cubic root of 20524230 is about 273.7929687977.

Adding to 20524230 its reverse (3242502), we get a palindrome (23766732).

The spelling of 20524230 in words is "twenty million, five hundred twenty-four thousand, two hundred thirty".