20504292 has 48 divisors (see below), whose sum is σ = 49674240. Its totient is φ = 6578208.

The previous prime is 20504221. The next prime is 20504353. The reversal of 20504292 is 29240502.

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, 40513 + ... + 41015.

It is an arithmetic number, because the mean of its divisors is an integer number (1034880).

Almost surely, 2^20504292 is an apocalyptic number.

It is an amenable number.

20504292 is an abundant number, since it is smaller than the sum of its proper divisors (29169948).

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

20504292 is a wasteful number, since it uses less digits than its factorization.

20504292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20504292 is about 4528.1665163728. The cubic root of 20504292 is about 273.7042825178.

Adding to 20504292 its reverse (29240502), we get a palindrome (49744794).

The spelling of 20504292 in words is "twenty million, five hundred four thousand, two hundred ninety-two".