21033698 has 8 divisors (see below), whose sum is σ = 36057792. Its totient is φ = 9014436.

The previous prime is 21033667. The next prime is 21033721. The reversal of 21033698 is 89633012.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751190 + ... + 751217.

It is an arithmetic number, because the mean of its divisors is an integer number (4507224).

Almost surely, 2^21033698 is an apocalyptic number.

21033698 is a deficient number, since it is larger than the sum of its proper divisors (15024094).

21033698 is a wasteful number, since it uses less digits than its factorization.

21033698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502416.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 21033698 is about 4586.2509743798. The cubic root of 21033698 is about 276.0399105626.

The spelling of 21033698 in words is "twenty-one million, thirty-three thousand, six hundred ninety-eight".