20862120 has 32 divisors (see below), whose sum is σ = 62586720. Its totient is φ = 5563200.

The previous prime is 20862119. The next prime is 20862131. The reversal of 20862120 is 2126802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86806 + ... + 87045.

It is an arithmetic number, because the mean of its divisors is an integer number (1955835).

Almost surely, 2^20862120 is an apocalyptic number.

20862120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20862120 is an abundant number, since it is smaller than the sum of its proper divisors (41724600).

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

20862120 is a wasteful number, since it uses less digits than its factorization.

20862120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173865 (or 173861 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 20862120 is about 4567.5069786482. The cubic root of 20862120 is about 275.2872810522.

Adding to 20862120 its reverse (2126802), we get a palindrome (22988922).

The spelling of 20862120 in words is "twenty million, eight hundred sixty-two thousand, one hundred twenty".