20482820 has 24 divisors (see below), whose sum is σ = 43099224. Its totient is φ = 8176896.

The previous prime is 20482789. The next prime is 20482837. The reversal of 20482820 is 2828402.

It can be written as a sum of positive squares in 4 ways, for example, as 2775556 + 17707264 = 1666^2 + 4208^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20482820.

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, 18194 + ... + 19286.

It is an arithmetic number, because the mean of its divisors is an integer number (1795801).

Almost surely, 2^20482820 is an apocalyptic number.

20482820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20482820 is an abundant number, since it is smaller than the sum of its proper divisors (22616404).

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

20482820 is a wasteful number, since it uses less digits than its factorization.

20482820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039 (or 2037 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 20482820 is about 4525.7949577947. The cubic root of 20482820 is about 273.6087085278.

The spelling of 20482820 in words is "twenty million, four hundred eighty-two thousand, eight hundred twenty".