20555124 has 12 divisors (see below), whose sum is σ = 47961984. Its totient is φ = 6851704.

The previous prime is 20555083. The next prime is 20555141. The reversal of 20555124 is 42155502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 20555094 and 20555103.

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 in 3 ways as a sum of consecutive naturals, for example, 856452 + ... + 856475.

It is an arithmetic number, because the mean of its divisors is an integer number (3996832).

Almost surely, 2^20555124 is an apocalyptic number.

It is an amenable number.

20555124 is an abundant number, since it is smaller than the sum of its proper divisors (27406860).

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

20555124 is a wasteful number, since it uses less digits than its factorization.

20555124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712934 (or 1712932 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 20555124 is about 4533.7759097688. The cubic root of 20555124 is about 273.9302751174.

The spelling of 20555124 in words is "twenty million, five hundred fifty-five thousand, one hundred twenty-four".