21482130 has 32 divisors (see below), whose sum is σ = 51710400. Its totient is φ = 5711552.

The previous prime is 21482117. The next prime is 21482137. The reversal of 21482130 is 3128412.

It is a super-2 number, since 2×21482130² = 922963818673800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21482097 and 21482106.

It is not an unprimeable number, because it can be changed into a prime (21482137) 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, 11716 + ... + 13424.

It is an arithmetic number, because the mean of its divisors is an integer number (1615950).

Almost surely, 2^21482130 is an apocalyptic number.

21482130 is an abundant number, since it is smaller than the sum of its proper divisors (30228270).

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

21482130 is a wasteful number, since it uses less digits than its factorization.

21482130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 21482130 is about 4634.8818755174. The cubic root of 21482130 is about 277.9878279093.

It can be divided in two parts, 21482 and 130, that added together give a palindrome (21612).

The spelling of 21482130 in words is "twenty-one million, four hundred eighty-two thousand, one hundred thirty".