21435098 has 8 divisors (see below), whose sum is σ = 32177460. Its totient is φ = 10709280.

The previous prime is 21435077. The next prime is 21435101. The reversal of 21435098 is 89053412.

It can be written as a sum of positive squares in 2 ways, for example, as 14845609 + 6589489 = 3853^2 + 2567^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113 + ... + 6548.

Almost surely, 2^21435098 is an apocalyptic number.

21435098 is a deficient number, since it is larger than the sum of its proper divisors (10742362).

21435098 is a wasteful number, since it uses less digits than its factorization.

21435098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8272.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 21435098 is about 4629.8053954783. The cubic root of 21435098 is about 277.7848083672.

The spelling of 21435098 in words is "twenty-one million, four hundred thirty-five thousand, ninety-eight".