20005352 has 8 divisors (see below), whose sum is σ = 37510050. Its totient is φ = 10002672.

The previous prime is 20005351. The next prime is 20005357. The reversal of 20005352 is 25350002.

It can be written as a sum of positive squares in only one way, i.e., 18028516 + 1976836 = 4246^2 + 1406^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20005352.

It is not an unprimeable number, because it can be changed into a prime (20005351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250327 + ... + 1250342.

Almost surely, 2^20005352 is an apocalyptic number.

It is an amenable number.

20005352 is a deficient number, since it is larger than the sum of its proper divisors (17504698).

20005352 is a wasteful number, since it uses less digits than its factorization.

20005352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500675 (or 2500671 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 20005352 is about 4472.7342867646. The cubic root of 20005352 is about 271.4659721052.

Adding to 20005352 its reverse (25350002), we get a palindrome (45355354).

The spelling of 20005352 in words is "twenty million, five thousand, three hundred fifty-two".