20360880 has 60 divisors (see below), whose sum is σ = 68381040. Its totient is φ = 5429376.

The previous prime is 20360861. The next prime is 20360881. The reversal of 20360880 is 8806302.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20360881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13420 + ... + 14859.

It is an arithmetic number, because the mean of its divisors is an integer number (1139684).

Almost surely, 2^20360880 is an apocalyptic number.

20360880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20360880 is an abundant number, since it is smaller than the sum of its proper divisors (48020160).

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

20360880 is a wasteful number, since it uses less digits than its factorization.

20360880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28298 (or 28289 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20360880 is about 4512.3031813033. The cubic root of 20360880 is about 273.0646709084.

The spelling of 20360880 in words is "twenty million, three hundred sixty thousand, eight hundred eighty".