20234385 has 12 divisors (see below), whose sum is σ = 35073012. Its totient is φ = 10791648.

The previous prime is 20234377. The next prime is 20234387. The reversal of 20234385 is 58343202.

It can be written as a sum of positive squares in 2 ways, for example, as 5419584 + 14814801 = 2328^2 + 3849^2 .

It is not a de Polignac number, because 20234385 - 2³ = 20234377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20234387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224782 + ... + 224871.

It is an arithmetic number, because the mean of its divisors is an integer number (2922751).

Almost surely, 2^20234385 is an apocalyptic number.

It is an amenable number.

20234385 is a deficient number, since it is larger than the sum of its proper divisors (14838627).

20234385 is a wasteful number, since it uses less digits than its factorization.

20234385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449664 (or 449661 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 20234385 is about 4498.2646654015. The cubic root of 20234385 is about 272.4980108151.

Adding to 20234385 its reverse (58343202), we get a palindrome (78577587).

The spelling of 20234385 in words is "twenty million, two hundred thirty-four thousand, three hundred eighty-five".