21482084 has 48 divisors (see below), whose sum is σ = 45158400. Its totient is φ = 8833536.

The previous prime is 21482081. The next prime is 21482093. The reversal of 21482084 is 48028412.

It is a super-2 number, since 2×21482084² = 922959865966112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21482081) 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, 16157 + ... + 17435.

It is an arithmetic number, because the mean of its divisors is an integer number (940800).

Almost surely, 2^21482084 is an apocalyptic number.

It is an amenable number.

21482084 is an abundant number, since it is smaller than the sum of its proper divisors (23676316).

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

21482084 is a wasteful number, since it uses less digits than its factorization.

21482084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332 (or 1330 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 21482084 is about 4634.8769131445. The cubic root of 21482084 is about 277.9876294894.

The spelling of 21482084 in words is "twenty-one million, four hundred eighty-two thousand, eighty-four".