21482118 has 64 divisors (see below), whose sum is σ = 57784320. Its totient is φ = 5774976.

The previous prime is 21482117. The next prime is 21482137. The reversal of 21482118 is 81128412.

It is a super-2 number, since 2×21482118² = 922962787531848, which contains 22 as substring.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21482091 and 21482100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21482113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4755 + ... + 8097.

It is an arithmetic number, because the mean of its divisors is an integer number (902880).

Almost surely, 2^21482118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21482118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28892160).

21482118 is an abundant number, since it is smaller than the sum of its proper divisors (36302202).

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

21482118 is a wasteful number, since it uses less digits than its factorization.

21482118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378 (or 3372 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 21482118 is about 4634.8805809859. The cubic root of 21482118 is about 277.9877761476.

The spelling of 21482118 in words is "twenty-one million, four hundred eighty-two thousand, one hundred eighteen".