20504546 has 16 divisors (see below), whose sum is σ = 32577984. Its totient is φ = 9658704.

The previous prime is 20504543. The next prime is 20504557. The reversal of 20504546 is 64540502.

It is a super-2 number, since 2×20504546² = 840872813332232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20504543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245 + ... + 6408.

It is an arithmetic number, because the mean of its divisors is an integer number (2036124).

Almost surely, 2^20504546 is an apocalyptic number.

20504546 is a deficient number, since it is larger than the sum of its proper divisors (12073438).

20504546 is a wasteful number, since it uses less digits than its factorization.

20504546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6745.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 20504546 is about 4528.1945629577. The cubic root of 20504546 is about 273.7054126975.

The spelling of 20504546 in words is "twenty million, five hundred four thousand, five hundred forty-six".