21835485 has 48 divisors (see below), whose sum is σ = 43739904. Its totient is φ = 9870336.

The previous prime is 21835483. The next prime is 21835507. The reversal of 21835485 is 58453812.

It is a happy number.

It is not a de Polignac number, because 21835485 - 2¹ = 21835483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21835481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32109 + ... + 32781.

It is an arithmetic number, because the mean of its divisors is an integer number (911248).

Almost surely, 2^21835485 is an apocalyptic number.

It is an amenable number.

21835485 is an abundant number, since it is smaller than the sum of its proper divisors (21904419).

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

21835485 is a wasteful number, since it uses less digits than its factorization.

21835485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 791 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 21835485 is about 4672.8454928448. The cubic root of 21835485 is about 279.5037340438.

The spelling of 21835485 in words is "twenty-one million, eight hundred thirty-five thousand, four hundred eighty-five".