20545984 has 14 divisors (see below), whose sum is σ = 40771064. Its totient is φ = 10272960.

The previous prime is 20545957. The next prime is 20546023. The reversal of 20545984 is 48954502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160452 + ... + 160579.

Almost surely, 2^20545984 is an apocalyptic number.

It is an amenable number.

20545984 is a deficient number, since it is larger than the sum of its proper divisors (20225080).

20545984 is an equidigital number, since it uses as much as digits as its factorization.

20545984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321043 (or 321033 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 20545984 is about 4532.7678078631. The cubic root of 20545984 is about 273.8896673366.

The spelling of 20545984 in words is "twenty million, five hundred forty-five thousand, nine hundred eighty-four".