20524212 has 48 divisors (see below), whose sum is σ = 54129600. Its totient is φ = 6723360.

The previous prime is 20524193. The next prime is 20524213. The reversal of 20524212 is 21242502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20524213) 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, 4762 + ... + 7982.

It is an arithmetic number, because the mean of its divisors is an integer number (1127700).

Almost surely, 2^20524212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20524212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27064800).

20524212 is an abundant number, since it is smaller than the sum of its proper divisors (33605388).

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

20524212 is a wasteful number, since it uses less digits than its factorization.

20524212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293 (or 3285 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 20524212 is about 4530.3655481650. The cubic root of 20524212 is about 273.7928887578.

Adding to 20524212 its reverse (21242502), we get a palindrome (41766714).

It can be divided in two parts, 20524 and 212, that added together give a 4-th power (20736 = 12⁴).

The spelling of 20524212 in words is "twenty million, five hundred twenty-four thousand, two hundred twelve".