20432097 has 12 divisors (see below), whose sum is σ = 33729280. Its totient is φ = 11675448.

The previous prime is 20432081. The next prime is 20432099. The reversal of 20432097 is 79023402.

It is not a de Polignac number, because 20432097 - 2⁴ = 20432081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20432097.

It is not an unprimeable number, because it can be changed into a prime (20432099) 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 11 ways as a sum of consecutive naturals, for example, 162097 + ... + 162222.

Almost surely, 2^20432097 is an apocalyptic number.

It is an amenable number.

20432097 is a deficient number, since it is larger than the sum of its proper divisors (13297183).

20432097 is a wasteful number, since it uses less digits than its factorization.

20432097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324332 (or 324329 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20432097 is about 4520.1877173410. The cubic root of 20432097 is about 273.3826698899.

Adding to 20432097 its reverse (79023402), we get a palindrome (99455499).

The spelling of 20432097 in words is "twenty million, four hundred thirty-two thousand, ninety-seven".