21146298 has 8 divisors (see below), whose sum is σ = 42292608. Its totient is φ = 7048764.

The previous prime is 21146273. The next prime is 21146299. The reversal of 21146298 is 89264112.

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

21146298 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (21146299) 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, 1762186 + ... + 1762197.

It is an arithmetic number, because the mean of its divisors is an integer number (5286576).

Almost surely, 2^21146298 is an apocalyptic number.

21146298 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21146298 is a wasteful number, since it uses less digits than its factorization.

21146298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524388.

The product of its digits is 6912, while the sum is 33.

The square root of 21146298 is about 4598.5104109918. The cubic root of 21146298 is about 276.5316103455.

The spelling of 21146298 in words is "twenty-one million, one hundred forty-six thousand, two hundred ninety-eight".