20498735 has 8 divisors (see below), whose sum is σ = 24655056. Its totient is φ = 16361280.

The previous prime is 20498707. The next prime is 20498741. The reversal of 20498735 is 53789402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20498735 - 2⁸ = 20498479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2201 + ... + 6770.

It is an arithmetic number, because the mean of its divisors is an integer number (3081882).

Almost surely, 2^20498735 is an apocalyptic number.

20498735 is a deficient number, since it is larger than the sum of its proper divisors (4156321).

20498735 is an equidigital number, since it uses as much as digits as its factorization.

20498735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9433.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 20498735 is about 4527.5528710331. The cubic root of 20498735 is about 273.6795541647.

The spelling of 20498735 in words is "twenty million, four hundred ninety-eight thousand, seven hundred thirty-five".