20289124 has 12 divisors (see below), whose sum is σ = 35538048. Its totient is φ = 10135400.

The previous prime is 20289103. The next prime is 20289167. The reversal of 20289124 is 42198202.

It is a junction number, because it is equal to n+sod(n) for n = 20289092 and 20289101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6129 + ... + 8839.

It is an arithmetic number, because the mean of its divisors is an integer number (2961504).

Almost surely, 2^20289124 is an apocalyptic number.

It is an amenable number.

20289124 is a deficient number, since it is larger than the sum of its proper divisors (15248924).

20289124 is a wasteful number, since it uses less digits than its factorization.

20289124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4586 (or 4584 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 20289124 is about 4504.3450134287. The cubic root of 20289124 is about 272.7435143324.

The spelling of 20289124 in words is "twenty million, two hundred eighty-nine thousand, one hundred twenty-four".