20504952 has 96 divisors (see below), whose sum is σ = 63008400. Its totient is φ = 5971968.

The previous prime is 20504923. The next prime is 20504959. The reversal of 20504952 is 25940502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20504959) 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, 17208 + ... + 18360.

Almost surely, 2^20504952 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 20504952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31504200).

20504952 is an abundant number, since it is smaller than the sum of its proper divisors (42503448).

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

20504952 is a wasteful number, since it uses less digits than its factorization.

20504952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1190 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 20504952 is about 4528.2393929650. The cubic root of 20504952 is about 273.7072191857.

The spelling of 20504952 in words is "twenty million, five hundred four thousand, nine hundred fifty-two".