20452432 has 80 divisors (see below), whose sum is σ = 53246592. Its totient is φ = 7349760.

The previous prime is 20452429. The next prime is 20452463. The reversal of 20452432 is 23425402.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 15378 + ... + 16654.

Almost surely, 2^20452432 is an apocalyptic number.

20452432 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 20452432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26623296).

20452432 is an abundant number, since it is smaller than the sum of its proper divisors (32794160).

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

20452432 is a wasteful number, since it uses less digits than its factorization.

20452432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 20452432 is about 4522.4365114394. The cubic root of 20452432 is about 273.4733343208.

Adding to 20452432 its reverse (23425402), we get a palindrome (43877834).

The spelling of 20452432 in words is "twenty million, four hundred fifty-two thousand, four hundred thirty-two".