20432232 has 48 divisors (see below), whose sum is σ = 58595940. Its totient is φ = 6409728.

The previous prime is 20432183. The next prime is 20432233. The reversal of 20432232 is 23223402.

20432232 is a `hidden beast` number, since 2 + 0 + 432 + 232 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20196036 + 236196 = 4494^2 + 486^2 .

It is a super-2 number, since 2×20432232² = 834952209003648, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (20432233) 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, 7123 + ... + 9570.

Almost surely, 2^20432232 is an apocalyptic number.

It is an amenable number.

20432232 is an abundant number, since it is smaller than the sum of its proper divisors (38163708).

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

20432232 is a wasteful number, since it uses less digits than its factorization.

20432232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16722 (or 16715 counting only the distinct ones).

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

The square root of 20432232 is about 4520.2026503244. The cubic root of 20432232 is about 273.3832719913.

Adding to 20432232 its reverse (23223402), we get a palindrome (43655634).

The spelling of 20432232 in words is "twenty million, four hundred thirty-two thousand, two hundred thirty-two".