20122432 has 56 divisors (see below), whose sum is σ = 44147232. Its totient is φ = 9024000.

The previous prime is 20122429. The next prime is 20122469. The reversal of 20122432 is 23422102.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70963 + ... + 71245.

Almost surely, 2^20122432 is an apocalyptic number.

20122432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20122432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22073616).

20122432 is an abundant number, since it is smaller than the sum of its proper divisors (24024800).

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

20122432 is a wasteful number, since it uses less digits than its factorization.

20122432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20122432 is about 4485.8033840105. The cubic root of 20122432 is about 271.9945212276.

Adding to 20122432 its reverse (23422102), we get a palindrome (43544534).

It can be divided in two parts, 2012 and 2432, that added together give a palindrome (4444).

The spelling of 20122432 in words is "twenty million, one hundred twenty-two thousand, four hundred thirty-two".