20143392 has 96 divisors (see below), whose sum is σ = 55847232. Its totient is φ = 6349824.

The previous prime is 20143391. The next prime is 20143411. The reversal of 20143392 is 29334102.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20143391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188203 + ... + 188309.

It is an arithmetic number, because the mean of its divisors is an integer number (581742).

Almost surely, 2^20143392 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 20143392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27923616).

20143392 is an abundant number, since it is smaller than the sum of its proper divisors (35703840).

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

20143392 is a wasteful number, since it uses less digits than its factorization.

20143392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 20143392 is about 4488.1390352795. The cubic root of 20143392 is about 272.0889270939.

Adding to 20143392 its reverse (29334102), we get a palindrome (49477494).

The spelling of 20143392 in words is "twenty million, one hundred forty-three thousand, three hundred ninety-two".