21364058 has 4 divisors (see below), whose sum is σ = 32046090. Its totient is φ = 10682028.

The previous prime is 21364009. The next prime is 21364061. The reversal of 21364058 is 85046312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20584369 + 779689 = 4537^2 + 883^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21364058.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5341013 + ... + 5341016.

Almost surely, 2^21364058 is an apocalyptic number.

21364058 is a deficient number, since it is larger than the sum of its proper divisors (10682032).

21364058 is a wasteful number, since it uses less digits than its factorization.

21364058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10682031.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 21364058 is about 4622.1269995533. The cubic root of 21364058 is about 277.4775914595.

The spelling of 21364058 in words is "twenty-one million, three hundred sixty-four thousand, fifty-eight".