21098035 has 8 divisors (see below), whose sum is σ = 28934496. Its totient is φ = 14467200.

The previous prime is 21098017. The next prime is 21098047. The reversal of 21098035 is 53089012.

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

It is not a de Polignac number, because 21098035 - 2²³ = 12709427 is a prime.

It is a super-2 number, since 2×21098035² = 890254161722450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21097994 and 21098012.

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, 301366 + ... + 301435.

It is an arithmetic number, because the mean of its divisors is an integer number (3616812).

Almost surely, 2^21098035 is an apocalyptic number.

21098035 is a deficient number, since it is larger than the sum of its proper divisors (7836461).

21098035 is an equidigital number, since it uses as much as digits as its factorization.

21098035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602813.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 21098035 is about 4593.2597357432. The cubic root of 21098035 is about 276.3210705535.

The spelling of 21098035 in words is "twenty-one million, ninety-eight thousand, thirty-five".