20220432 has 80 divisors (see below), whose sum is σ = 54853632. Its totient is φ = 6410880.

The previous prime is 20220407. The next prime is 20220451. The reversal of 20220432 is 23402202.

It is a super-3 number, since 3×20220432³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159153 + ... + 159279.

Almost surely, 2^20220432 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 20220432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27426816).

20220432 is an abundant number, since it is smaller than the sum of its proper divisors (34633200).

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

20220432 is a wasteful number, since it uses less digits than its factorization.

20220432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20220432 is about 4496.7134665220. The cubic root of 20220432 is about 272.4353610396.

Adding to 20220432 its reverse (23402202), we get a palindrome (43622634).

The spelling of 20220432 in words is "twenty million, two hundred twenty thousand, four hundred thirty-two".