20343492 has 72 divisors (see below), whose sum is σ = 58660056. Its totient is φ = 5889024.

The previous prime is 20343481. The next prime is 20343493. The reversal of 20343492 is 29434302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1887876 + 18455616 = 1374^2 + 4296^2 .

It is not an unprimeable number, because it can be changed into a prime (20343493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6678 + ... + 9234.

It is an arithmetic number, because the mean of its divisors is an integer number (814723).

Almost surely, 2^20343492 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 20343492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29330028).

20343492 is an abundant number, since it is smaller than the sum of its proper divisors (38316564).

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

20343492 is a wasteful number, since it uses less digits than its factorization.

20343492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597 (or 2592 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 20343492 is about 4510.3760375383. The cubic root of 20343492 is about 272.9869172171.

Adding to 20343492 its reverse (29434302), we get a palindrome (49777794).

The spelling of 20343492 in words is "twenty million, three hundred forty-three thousand, four hundred ninety-two".