20432086 has 16 divisors (see below), whose sum is σ = 31406400. Its totient is φ = 9966528.

The previous prime is 20432081. The next prime is 20432099. The reversal of 20432086 is 68023402.

It is a happy number.

It is a super-2 number, since 2×20432086² = 834940276622792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20432086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432081) 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, 13336 + ... + 14788.

It is an arithmetic number, because the mean of its divisors is an integer number (1962900).

Almost surely, 2^20432086 is an apocalyptic number.

20432086 is a deficient number, since it is larger than the sum of its proper divisors (10974314).

20432086 is a wasteful number, since it uses less digits than its factorization.

20432086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 20432086 is about 4520.1865005772. The cubic root of 20432086 is about 273.3826208297.

Adding to 20432086 its reverse (68023402), we get a palindrome (88455488).

The spelling of 20432086 in words is "twenty million, four hundred thirty-two thousand, eighty-six".