20102380 has 24 divisors (see below), whose sum is σ = 44437680. Its totient is φ = 7617600.

The previous prime is 20102321. The next prime is 20102389. The reversal of 20102380 is 8320102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20102389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26071 + ... + 26830.

It is an arithmetic number, because the mean of its divisors is an integer number (1851570).

Almost surely, 2^20102380 is an apocalyptic number.

20102380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102380 is an abundant number, since it is smaller than the sum of its proper divisors (24335300).

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

20102380 is a wasteful number, since it uses less digits than its factorization.

20102380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52929 (or 52927 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20102380 is about 4483.5677757786. The cubic root of 20102380 is about 271.9041437028.

Adding to 20102380 its reverse (8320102), we get a palindrome (28422482).

It can be divided in two parts, 20 and 102380, that added together give a square (102400 = 320²).

The spelling of 20102380 in words is "twenty million, one hundred two thousand, three hundred eighty".