20678124 has 12 divisors (see below), whose sum is σ = 48248984. Its totient is φ = 6892704.

The previous prime is 20678123. The next prime is 20678149. The reversal of 20678124 is 42187602.

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 = 20678091 and 20678100.

It is not an unprimeable number, because it can be changed into a prime (20678123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861577 + ... + 861600.

Almost surely, 2^20678124 is an apocalyptic number.

It is an amenable number.

20678124 is an abundant number, since it is smaller than the sum of its proper divisors (27570860).

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

20678124 is a wasteful number, since it uses less digits than its factorization.

20678124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723184 (or 1723182 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20678124 is about 4547.3205297186. The cubic root of 20678124 is about 274.4755801913.

It can be divided in two parts, 20678 and 124, that added together give a palindrome (20802).

The spelling of 20678124 in words is "twenty million, six hundred seventy-eight thousand, one hundred twenty-four".