20132745 has 16 divisors (see below), whose sum is σ = 32741952. Its totient is φ = 10560960.

The previous prime is 20132713. The next prime is 20132803. The reversal of 20132745 is 54723102.

It is not a de Polignac number, because 20132745 - 2⁵ = 20132713 is a prime.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10087 + ... + 11916.

It is an arithmetic number, because the mean of its divisors is an integer number (2046372).

Almost surely, 2^20132745 is an apocalyptic number.

It is an amenable number.

20132745 is a deficient number, since it is larger than the sum of its proper divisors (12609207).

20132745 is a wasteful number, since it uses less digits than its factorization.

20132745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22072.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20132745 is about 4486.9527521471. The cubic root of 20132745 is about 272.0409801649.

Adding to 20132745 its reverse (54723102), we get a palindrome (74855847).

The spelling of 20132745 in words is "twenty million, one hundred thirty-two thousand, seven hundred forty-five".