20524512 has 48 divisors (see below), whose sum is σ = 54698112. Its totient is φ = 6737280.

The previous prime is 20524499. The next prime is 20524519. The reversal of 20524512 is 21542502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20524519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4837 + ... + 8027.

It is an arithmetic number, because the mean of its divisors is an integer number (1139544).

Almost surely, 2^20524512 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 20524512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27349056).

20524512 is an abundant number, since it is smaller than the sum of its proper divisors (34173600).

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

20524512 is a wasteful number, since it uses less digits than its factorization.

20524512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271 (or 3263 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 20524512 is about 4530.3986579549. The cubic root of 20524512 is about 273.7942227508.

The spelling of 20524512 in words is "twenty million, five hundred twenty-four thousand, five hundred twelve".