21335030 has 16 divisors (see below), whose sum is σ = 40073184. Its totient is φ = 8162880.

The previous prime is 21335029. The next prime is 21335033. The reversal of 21335030 is 3053312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21335033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46151 + ... + 46610.

It is an arithmetic number, because the mean of its divisors is an integer number (2504574).

Almost surely, 2^21335030 is an apocalyptic number.

21335030 is a deficient number, since it is larger than the sum of its proper divisors (18738154).

21335030 is a wasteful number, since it uses less digits than its factorization.

21335030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92791.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 21335030 is about 4618.9858194197. The cubic root of 21335030 is about 277.3518620639.

Adding to 21335030 its reverse (3053312), we get a palindrome (24388342).

The spelling of 21335030 in words is "twenty-one million, three hundred thirty-five thousand, thirty".