21035079 has 16 divisors (see below), whose sum is σ = 33560800. Its totient is φ = 12944448.

The previous prime is 21035059. The next prime is 21035111. The reversal of 21035079 is 97053012.

It is not a de Polignac number, because 21035079 - 2⁸ = 21034823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21035029) 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 15 ways as a sum of consecutive naturals, for example, 29614 + ... + 30315.

It is an arithmetic number, because the mean of its divisors is an integer number (2097550).

Almost surely, 2^21035079 is an apocalyptic number.

21035079 is a deficient number, since it is larger than the sum of its proper divisors (12525721).

21035079 is a wasteful number, since it uses less digits than its factorization.

21035079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59951 (or 59945 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 21035079 is about 4586.4015306120. The cubic root of 21035079 is about 276.0459517063.

The spelling of 21035079 in words is "twenty-one million, thirty-five thousand, seventy-nine".