21482382 has 8 divisors (see below), whose sum is σ = 42964776. Its totient is φ = 7160792.

The previous prime is 21482371. The next prime is 21482387. The reversal of 21482382 is 28328412.

It is a sphenic number, since it is the product of 3 distinct primes.

21482382 is an admirable number.

It is a super-2 number, since 2×21482382² = 922985472787848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21482387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1790193 + ... + 1790204.

It is an arithmetic number, because the mean of its divisors is an integer number (5370597).

Almost surely, 2^21482382 is an apocalyptic number.

21482382 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21482382 is a wasteful number, since it uses less digits than its factorization.

21482382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580402.

The product of its digits is 6144, while the sum is 30.

The square root of 21482382 is about 4634.9090605966. The cubic root of 21482382 is about 277.9889149005.

The spelling of 21482382 in words is "twenty-one million, four hundred eighty-two thousand, three hundred eighty-two".