20434032 has 50 divisors (see below), whose sum is σ = 59145768. Its totient is φ = 6810912.

The previous prime is 20433989. The next prime is 20434069. The reversal of 20434032 is 23043402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20433996 and 20434014.

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 6588 + ... + 9179.

Almost surely, 2^20434032 is an apocalyptic number.

It is an amenable number.

20434032 is an abundant number, since it is smaller than the sum of its proper divisors (38711736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20434032 is a wasteful number, since it uses less digits than its factorization.

20434032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15787 (or 15772 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 20434032 is about 4520.4017520570. The cubic root of 20434032 is about 273.3912997558.

Adding to 20434032 its reverse (23043402), we get a palindrome (43477434).

The spelling of 20434032 in words is "twenty million, four hundred thirty-four thousand, thirty-two".