21348485 has 16 divisors (see below), whose sum is σ = 27108864. Its totient is φ = 16106112.

The previous prime is 21348479. The next prime is 21348487. The reversal of 21348485 is 58484312.

It is a cyclic number.

It is not a de Polignac number, because 21348485 - 2⁶ = 21348421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21348487) 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, 7124 + ... + 9666.

It is an arithmetic number, because the mean of its divisors is an integer number (1694304).

Almost surely, 2^21348485 is an apocalyptic number.

It is an amenable number.

21348485 is a deficient number, since it is larger than the sum of its proper divisors (5760379).

21348485 is a wasteful number, since it uses less digits than its factorization.

21348485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644.

The product of its digits is 30720, while the sum is 35.

The square root of 21348485 is about 4620.4420784163. The cubic root of 21348485 is about 277.4101540699.

The spelling of 21348485 in words is "twenty-one million, three hundred forty-eight thousand, four hundred eighty-five".