20249504 has 24 divisors (see below), whose sum is σ = 43491168. Its totient is φ = 9204160.

The previous prime is 20249503. The next prime is 20249519. The reversal of 20249504 is 40594202.

It is not an unprimeable number, because it can be changed into a prime (20249501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28412 + ... + 29115.

It is an arithmetic number, because the mean of its divisors is an integer number (1812132).

Almost surely, 2^20249504 is an apocalyptic number.

It is an amenable number.

20249504 is an abundant number, since it is smaller than the sum of its proper divisors (23241664).

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

20249504 is a wasteful number, since it uses less digits than its factorization.

20249504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57548 (or 57540 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20249504 is about 4499.9448885514. The cubic root of 20249504 is about 272.5658634948.

The spelling of 20249504 in words is "twenty million, two hundred forty-nine thousand, five hundred four".