21335034 has 32 divisors (see below), whose sum is σ = 51636096. Its totient is φ = 5736960.

The previous prime is 21335033. The next prime is 21335057. The reversal of 21335034 is 43053312.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 21335034.

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 15 ways as a sum of consecutive naturals, for example, 14227 + ... + 15654.

It is an arithmetic number, because the mean of its divisors is an integer number (1613628).

Almost surely, 2^21335034 is an apocalyptic number.

21335034 is an abundant number, since it is smaller than the sum of its proper divisors (30301062).

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

21335034 is a wasteful number, since it uses less digits than its factorization.

21335034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29910.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 21335034 is about 4618.9862524151. The cubic root of 21335034 is about 277.3518793970.

Adding to 21335034 its reverse (43053312), we get a palindrome (64388346).

The spelling of 21335034 in words is "twenty-one million, three hundred thirty-five thousand, thirty-four".