20315652 has 48 divisors (see below), whose sum is σ = 54405120. Its totient is φ = 5779872.

The previous prime is 20315569. The next prime is 20315657. The reversal of 20315652 is 25651302.

It is not an unprimeable number, because it can be changed into a prime (20315657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30499 + ... + 31157.

It is an arithmetic number, because the mean of its divisors is an integer number (1133440).

Almost surely, 2^20315652 is an apocalyptic number.

It is an amenable number.

20315652 is an abundant number, since it is smaller than the sum of its proper divisors (34089468).

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

20315652 is a wasteful number, since it uses less digits than its factorization.

20315652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1038 counting only the distinct ones).

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

The square root of 20315652 is about 4507.2887637692. The cubic root of 20315652 is about 272.8623331445.

Adding to 20315652 its reverse (25651302), we get a palindrome (45966954).

The spelling of 20315652 in words is "twenty million, three hundred fifteen thousand, six hundred fifty-two".