21098362 has 8 divisors (see below), whose sum is σ = 32502996. Its totient is φ = 10264032.

The previous prime is 21098359. The next prime is 21098369. The reversal of 21098362 is 26389012.

It can be written as a sum of positive squares in 2 ways, for example, as 15139881 + 5958481 = 3891^2 + 2441^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21098369) 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, 142483 + ... + 142630.

Almost surely, 2^21098362 is an apocalyptic number.

21098362 is a deficient number, since it is larger than the sum of its proper divisors (11404634).

21098362 is a wasteful number, since it uses less digits than its factorization.

21098362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285152.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 21098362 is about 4593.2953312410. The cubic root of 21098362 is about 276.3224981197.

The spelling of 21098362 in words is "twenty-one million, ninety-eight thousand, three hundred sixty-two".