20868024 has 16 divisors (see below), whose sum is σ = 52170120. Its totient is φ = 6956000.

The previous prime is 20868019. The next prime is 20868059. The reversal of 20868024 is 42086802.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20867982 and 20868000.

It is a congruent number.

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, 434727 + ... + 434774.

Almost surely, 2^20868024 is an apocalyptic number.

20868024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20868024 is an abundant number, since it is smaller than the sum of its proper divisors (31302096).

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

20868024 is a wasteful number, since it uses less digits than its factorization.

20868024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869510 (or 869506 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 20868024 is about 4568.1532373597. The cubic root of 20868024 is about 275.3132474578.

The spelling of 20868024 in words is "twenty million, eight hundred sixty-eight thousand, twenty-four".