20111432 has 16 divisors (see below), whose sum is σ = 41137200. Its totient is φ = 9141520.

The previous prime is 20111411. The next prime is 20111447. The reversal of 20111432 is 23411102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114182 + ... + 114357.

It is an arithmetic number, because the mean of its divisors is an integer number (2571075).

Almost surely, 2^20111432 is an apocalyptic number.

20111432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20111432 is an abundant number, since it is smaller than the sum of its proper divisors (21025768).

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

20111432 is a wasteful number, since it uses less digits than its factorization.

20111432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228556 (or 228552 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 20111432 is about 4484.5771261068. The cubic root of 20111432 is about 271.9449499318.

Adding to 20111432 its reverse (23411102), we get a palindrome (43522534).

It can be divided in two parts, 2011 and 1432, that added together give a palindrome (3443).

The spelling of 20111432 in words is "twenty million, one hundred eleven thousand, four hundred thirty-two".