21234098 has 8 divisors (see below), whose sum is σ = 31978800. Its totient is φ = 10574500.

The previous prime is 21234097. The next prime is 21234113. The reversal of 21234098 is 89043212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21234098.

It is not an unprimeable number, because it can be changed into a prime (21234091) 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, 20648 + ... + 21651.

It is an arithmetic number, because the mean of its divisors is an integer number (3997350).

Almost surely, 2^21234098 is an apocalyptic number.

21234098 is a deficient number, since it is larger than the sum of its proper divisors (10744702).

21234098 is a wasteful number, since it uses less digits than its factorization.

21234098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42552.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 21234098 is about 4608.0470917733. The cubic root of 21234098 is about 276.9138041094.

The spelling of 21234098 in words is "twenty-one million, two hundred thirty-four thousand, ninety-eight".