20352045 has 32 divisors (see below), whose sum is σ = 37416960. Its totient is φ = 9253440.

The previous prime is 20352037. The next prime is 20352047. The reversal of 20352045 is 54025302.

It is not a de Polignac number, because 20352045 - 2³ = 20352037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24690 + ... + 25500.

It is an arithmetic number, because the mean of its divisors is an integer number (1169280).

Almost surely, 2^20352045 is an apocalyptic number.

It is an amenable number.

20352045 is a deficient number, since it is larger than the sum of its proper divisors (17064915).

20352045 is a wasteful number, since it uses less digits than its factorization.

20352045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 20352045 is about 4511.3240850110. The cubic root of 20352045 is about 273.0251690893.

Adding to 20352045 its reverse (54025302), we get a palindrome (74377347).

The spelling of 20352045 in words is "twenty million, three hundred fifty-two thousand, forty-five".