20868052 has 12 divisors (see below), whose sum is σ = 37778580. Its totient is φ = 10074176.

The previous prime is 20868019. The next prime is 20868059. The reversal of 20868052 is 25086802.

It can be written as a sum of positive squares in 2 ways, for example, as 17606416 + 3261636 = 4196^2 + 1806^2 .

It is a super-5 number, since 5×20868052⁵ (a number of 38 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20868059) 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, 89833 + ... + 90064.

It is an arithmetic number, because the mean of its divisors is an integer number (3148215).

Almost surely, 2^20868052 is an apocalyptic number.

It is an amenable number.

20868052 is a deficient number, since it is larger than the sum of its proper divisors (16910528).

20868052 is a wasteful number, since it uses less digits than its factorization.

20868052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179930 (or 179928 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 20868052 is about 4568.1563020545. The cubic root of 20868052 is about 275.3133705930.

The spelling of 20868052 in words is "twenty million, eight hundred sixty-eight thousand, fifty-two".