20514660 has 24 divisors (see below), whose sum is σ = 57441216. Its totient is φ = 5470560.

The previous prime is 20514619. The next prime is 20514677. The reversal of 20514660 is 6641502.

It is a self number, because there is not a number n which added to its sum of digits gives 20514660.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170896 + ... + 171015.

It is an arithmetic number, because the mean of its divisors is an integer number (2393384).

Almost surely, 2^20514660 is an apocalyptic number.

20514660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20514660 is an abundant number, since it is smaller than the sum of its proper divisors (36926556).

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

20514660 is a wasteful number, since it uses less digits than its factorization.

20514660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341923 (or 341921 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20514660 is about 4529.3112059120. The cubic root of 20514660 is about 273.7504076223.

The spelling of 20514660 in words is "twenty million, five hundred fourteen thousand, six hundred sixty".