20301945 has 8 divisors (see below), whose sum is σ = 32483136. Its totient is φ = 10827696.

The previous prime is 20301913. The next prime is 20301949. The reversal of 20301945 is 54910302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20301945 - 2⁵ = 20301913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20301949) 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 7 ways as a sum of consecutive naturals, for example, 676717 + ... + 676746.

It is an arithmetic number, because the mean of its divisors is an integer number (4060392).

Almost surely, 2^20301945 is an apocalyptic number.

It is an amenable number.

20301945 is a deficient number, since it is larger than the sum of its proper divisors (12181191).

20301945 is a wasteful number, since it uses less digits than its factorization.

20301945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353471.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 20301945 is about 4505.7679700579. The cubic root of 20301945 is about 272.8009524667.

The spelling of 20301945 in words is "twenty million, three hundred one thousand, nine hundred forty-five".