20464235 has 16 divisors (see below), whose sum is σ = 28200960. Its totient is φ = 14099040.

The previous prime is 20464229. The next prime is 20464237. The reversal of 20464235 is 53246402.

It is not a de Polignac number, because 20464235 - 2⁸ = 20463979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20464237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8747 + ... + 10836.

It is an arithmetic number, because the mean of its divisors is an integer number (1762560).

Almost surely, 2^20464235 is an apocalyptic number.

20464235 is a deficient number, since it is larger than the sum of its proper divisors (7736725).

20464235 is a wasteful number, since it uses less digits than its factorization.

20464235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19618.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 20464235 is about 4523.7412613897. The cubic root of 20464235 is about 273.5259309190.

The spelling of 20464235 in words is "twenty million, four hundred sixty-four thousand, two hundred thirty-five".