20498560 has 32 divisors (see below), whose sum is σ = 49005900. Its totient is φ = 8199168.

The previous prime is 20498557. The next prime is 20498561. The reversal of 20498560 is 6589402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16842816 + 3655744 = 4104^2 + 1912^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (20498561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15375 + ... + 16654.

Almost surely, 2^20498560 is an apocalyptic number.

20498560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20498560 is an abundant number, since it is smaller than the sum of its proper divisors (28507340).

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

20498560 is an equidigital number, since it uses as much as digits as its factorization.

20498560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32048 (or 32036 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 20498560 is about 4527.5335448785. The cubic root of 20498560 is about 273.6787753514.

It can be divided in two parts, 2049 and 8560, that added together give a square (10609 = 103²).

The spelling of 20498560 in words is "twenty million, four hundred ninety-eight thousand, five hundred sixty".