20432395 has 16 divisors (see below), whose sum is σ = 25804800. Its totient is φ = 15501024.

The previous prime is 20432383. The next prime is 20432407. The reversal of 20432395 is 59323402.

It is an interprime number because it is at equal distance from previous prime (20432383) and next prime (20432407).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20432395 is a prime.

It is a super-4 number, since 4×20432395⁴ (a number of 30 digits) contains 4444 as substring.

It is an unprimeable number.

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, 13906 + ... + 15304.

It is an arithmetic number, because the mean of its divisors is an integer number (1612800).

Almost surely, 2^20432395 is an apocalyptic number.

20432395 is a deficient number, since it is larger than the sum of its proper divisors (5372405).

20432395 is a wasteful number, since it uses less digits than its factorization.

20432395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 20432395 is about 4520.2206804536. The cubic root of 20432395 is about 273.3839989694.

Adding to 20432395 its reverse (59323402), we get a palindrome (79755797).

The spelling of 20432395 in words is "twenty million, four hundred thirty-two thousand, three hundred ninety-five".