20004292 has 48 divisors (see below), whose sum is σ = 44126208. Its totient is φ = 7708320.

The previous prime is 20004289. The next prime is 20004307. The reversal of 20004292 is 29240002.

It is a happy 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, 32653 + ... + 33259.

It is an arithmetic number, because the mean of its divisors is an integer number (919296).

Almost surely, 2^20004292 is an apocalyptic number.

20004292 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 20004292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22063104).

20004292 is an abundant number, since it is smaller than the sum of its proper divisors (24121916).

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

20004292 is a wasteful number, since it uses less digits than its factorization.

20004292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20004292 is about 4472.6157894458. The cubic root of 20004292 is about 271.4611774047.

Adding to 20004292 its reverse (29240002), we get a palindrome (49244294).

The spelling of 20004292 in words is "twenty million, four thousand, two hundred ninety-two".