21024334 has 16 divisors (see below), whose sum is σ = 32503680. Its totient is φ = 10193400.

The previous prime is 21024331. The next prime is 21024361. The reversal of 21024334 is 43342012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21024331) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12177 + ... + 13795.

It is an arithmetic number, because the mean of its divisors is an integer number (2031480).

Almost surely, 2^21024334 is an apocalyptic number.

21024334 is a deficient number, since it is larger than the sum of its proper divisors (11479346).

21024334 is a wasteful number, since it uses less digits than its factorization.

21024334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 21024334 is about 4585.2299833269. The cubic root of 21024334 is about 275.9989410447.

Adding to 21024334 its reverse (43342012), we get a palindrome (64366346).

The spelling of 21024334 in words is "twenty-one million, twenty-four thousand, three hundred thirty-four".