20445352 has 8 divisors (see below), whose sum is σ = 38335050. Its totient is φ = 10222672.

The previous prime is 20445323. The next prime is 20445353. The reversal of 20445352 is 25354402.

It can be written as a sum of positive squares in only one way, i.e., 19660356 + 784996 = 4434^2 + 886^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20445353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277827 + ... + 1277842.

Almost surely, 2^20445352 is an apocalyptic number.

It is an amenable number.

20445352 is a deficient number, since it is larger than the sum of its proper divisors (17889698).

20445352 is a wasteful number, since it uses less digits than its factorization.

20445352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555675 (or 2555671 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 20445352 is about 4521.6536797946. The cubic root of 20445352 is about 273.4417746728.

Adding to 20445352 its reverse (25354402), we get a palindrome (45799754).

It can be divided in two parts, 2044 and 5352, that added together give a square (7396 = 86²).

The spelling of 20445352 in words is "twenty million, four hundred forty-five thousand, three hundred fifty-two".