20545235 has 8 divisors (see below), whose sum is σ = 24718176. Its totient is φ = 16393600.

The previous prime is 20545207. The next prime is 20545237. The reversal of 20545235 is 53254502.

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

It is not a de Polignac number, because 20545235 - 2²² = 16350931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20545237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3119 + ... + 7128.

It is an arithmetic number, because the mean of its divisors is an integer number (3089772).

Almost surely, 2^20545235 is an apocalyptic number.

20545235 is a deficient number, since it is larger than the sum of its proper divisors (4172941).

20545235 is a wasteful number, since it uses less digits than its factorization.

20545235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10653.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 20545235 is about 4532.6851865092. The cubic root of 20545235 is about 273.8863390973.

Adding to 20545235 its reverse (53254502), we get a palindrome (73799737).

The spelling of 20545235 in words is "twenty million, five hundred forty-five thousand, two hundred thirty-five".