20435345 has 16 divisors (see below), whose sum is σ = 28245888. Its totient is φ = 13902720.

The previous prime is 20435341. The next prime is 20435351. The reversal of 20435345 is 54353402.

It is not a de Polignac number, because 20435345 - 2² = 20435341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20435341) 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 15 ways as a sum of consecutive naturals, for example, 2357 + ... + 6813.

It is an arithmetic number, because the mean of its divisors is an integer number (1765368).

Almost surely, 2^20435345 is an apocalyptic number.

It is an amenable number.

20435345 is a deficient number, since it is larger than the sum of its proper divisors (7810543).

20435345 is a wasteful number, since it uses less digits than its factorization.

20435345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 20435345 is about 4520.5469801784. The cubic root of 20435345 is about 273.3971552666.

Adding to 20435345 its reverse (54353402), we get a palindrome (74788747).

The spelling of 20435345 in words is "twenty million, four hundred thirty-five thousand, three hundred forty-five".