20345652 has 36 divisors (see below), whose sum is σ = 51788100. Its totient is φ = 6734592.

The previous prime is 20345629. The next prime is 20345659. The reversal of 20345652 is 25654302.

20345652 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 5 + 652 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3006756 + 17338896 = 1734^2 + 4164^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345659) 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 11 ways as a sum of consecutive naturals, for example, 3468 + ... + 7260.

Almost surely, 2^20345652 is an apocalyptic number.

It is an amenable number.

20345652 is an abundant number, since it is smaller than the sum of its proper divisors (31442448).

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

20345652 is a wasteful number, since it uses less digits than its factorization.

20345652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3952 (or 3947 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 20345652 is about 4510.6154790671. The cubic root of 20345652 is about 272.9965784702.

Adding to 20345652 its reverse (25654302), we get a palindrome (45999954).

The spelling of 20345652 in words is "twenty million, three hundred forty-five thousand, six hundred fifty-two".