20504754 has 48 divisors (see below), whose sum is σ = 47536632. Its totient is φ = 6365184.

The previous prime is 20504749. The next prime is 20504777. The reversal of 20504754 is 45740502.

It can be written as a sum of positive squares in 4 ways, for example, as 15563025 + 4941729 = 3945^2 + 2223^2 .

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 34282 + ... + 34874.

Almost surely, 2^20504754 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20504754, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23768316).

20504754 is an abundant number, since it is smaller than the sum of its proper divisors (27031878).

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

20504754 is a wasteful number, since it uses less digits than its factorization.

20504754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 20504754 is about 4528.2175301105. The cubic root of 20504754 is about 273.7063381920.

The spelling of 20504754 in words is "twenty million, five hundred four thousand, seven hundred fifty-four".