20123232 has 48 divisors (see below), whose sum is σ = 53392752. Its totient is φ = 6635520.

The previous prime is 20123231. The next prime is 20123237. The reversal of 20123232 is 23232102.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×20123232² = 809888932251648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123231) 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, 8232 + ... + 10392.

It is an arithmetic number, because the mean of its divisors is an integer number (1112349).

Almost surely, 2^20123232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20123232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26696376).

20123232 is an abundant number, since it is smaller than the sum of its proper divisors (33269520).

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

20123232 is a wasteful number, since it uses less digits than its factorization.

20123232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271 (or 2263 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20123232 is about 4485.8925533276. The cubic root of 20123232 is about 271.9981257080.

Adding to 20123232 its reverse (23232102), we get a palindrome (43355334).

The spelling of 20123232 in words is "twenty million, one hundred twenty-three thousand, two hundred thirty-two".