20503044 has 30 divisors (see below), whose sum is σ = 53599854. Its totient is φ = 6834240.

The previous prime is 20503027. The next prime is 20503073. The reversal of 20503044 is 44030502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14152644 + 6350400 = 3762^2 + 2520^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31317 + ... + 31964.

Almost surely, 2^20503044 is an apocalyptic number.

It is an amenable number.

20503044 is an abundant number, since it is smaller than the sum of its proper divisors (33096810).

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

20503044 is a wasteful number, since it uses less digits than its factorization.

20503044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63297 (or 63286 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 20503044 is about 4528.0287101563. The cubic root of 20503044 is about 273.6987293735.

Adding to 20503044 its reverse (44030502), we get a palindrome (64533546).

The spelling of 20503044 in words is "twenty million, five hundred three thousand, forty-four".