20516352 has 120 divisors (see below), whose sum is σ = 59243976. Its totient is φ = 6303744.

The previous prime is 20516351. The next prime is 20516357. The reversal of 20516352 is 25361502.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20516351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 554478 + ... + 554514.

Almost surely, 2^20516352 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 20516352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29621988).

20516352 is an abundant number, since it is smaller than the sum of its proper divisors (38727624).

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

20516352 is an equidigital number, since it uses as much as digits as its factorization.

20516352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 20516352 is about 4529.4979854284. The cubic root of 20516352 is about 273.7579335079.

Adding to 20516352 its reverse (25361502), we get a palindrome (45877854).

The spelling of 20516352 in words is "twenty million, five hundred sixteen thousand, three hundred fifty-two".