20852118 has 48 divisors (see below), whose sum is σ = 52499616. Its totient is φ = 5857920.

The previous prime is 20852113. The next prime is 20852123. The reversal of 20852118 is 81125802.

It is an interprime number because it is at equal distance from previous prime (20852113) and next prime (20852123).

It is a junction number, because it is equal to n+sod(n) for n = 20852091 and 20852100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20852113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6330 + ... + 9042.

It is an arithmetic number, because the mean of its divisors is an integer number (1093742).

Almost surely, 2^20852118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20852118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26249808).

20852118 is an abundant number, since it is smaller than the sum of its proper divisors (31647498).

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

20852118 is a wasteful number, since it uses less digits than its factorization.

20852118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789 (or 2786 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 20852118 is about 4566.4119393677. The cubic root of 20852118 is about 275.2432800345.

It can be divided in two parts, 208 and 52118, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 20852118 in words is "twenty million, eight hundred fifty-two thousand, one hundred eighteen".