20545048 has 8 divisors (see below), whose sum is σ = 38521980. Its totient is φ = 10272520.

The previous prime is 20545037. The next prime is 20545051. The reversal of 20545048 is 84054502.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1284058 + ... + 1284073.

Almost surely, 2^20545048 is an apocalyptic number.

It is an amenable number.

20545048 is a deficient number, since it is larger than the sum of its proper divisors (17976932).

20545048 is a wasteful number, since it uses less digits than its factorization.

20545048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568137 (or 2568133 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 20545048 is about 4532.6645585130. The cubic root of 20545048 is about 273.8855081358.

The spelling of 20545048 in words is "twenty million, five hundred forty-five thousand, forty-eight".