20316552 has 64 divisors (see below), whose sum is σ = 52859520. Its totient is φ = 6501888.

The previous prime is 20316551. The next prime is 20316577. The reversal of 20316552 is 25561302.

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

It is not an unprimeable number, because it can be changed into a prime (20316551) 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, 121573 + ... + 121739.

It is an arithmetic number, because the mean of its divisors is an integer number (825930).

Almost surely, 2^20316552 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 20316552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26429760).

20316552 is an abundant number, since it is smaller than the sum of its proper divisors (32542968).

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

20316552 is a wasteful number, since it uses less digits than its factorization.

20316552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 346 counting only the distinct ones).

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

The square root of 20316552 is about 4507.3886009529. The cubic root of 20316552 is about 272.8663624265.

Adding to 20316552 its reverse (25561302), we get a palindrome (45877854).

The spelling of 20316552 in words is "twenty million, three hundred sixteen thousand, five hundred fifty-two".