20512032 has 48 divisors (see below), whose sum is σ = 55107360. Its totient is φ = 6676992.

The previous prime is 20512031. The next prime is 20512073. The reversal of 20512032 is 23021502.

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

It is not an unprimeable number, because it can be changed into a prime (20512031) 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, 1644 + ... + 6612.

It is an arithmetic number, because the mean of its divisors is an integer number (1148070).

Almost surely, 2^20512032 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 20512032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27553680).

20512032 is an abundant number, since it is smaller than the sum of its proper divisors (34595328).

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

20512032 is a wasteful number, since it uses less digits than its factorization.

20512032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025 (or 5017 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 20512032 is about 4529.0210862834. The cubic root of 20512032 is about 273.7387176602.

Adding to 20512032 its reverse (23021502), we get a palindrome (43533534).

The spelling of 20512032 in words is "twenty million, five hundred twelve thousand, thirty-two".