21434082 has 16 divisors (see below), whose sum is σ = 44251392. Its totient is φ = 6914160.

The previous prime is 21434053. The next prime is 21434099. The reversal of 21434082 is 28043412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57433 + ... + 57804.

It is an arithmetic number, because the mean of its divisors is an integer number (2765712).

Almost surely, 2^21434082 is an apocalyptic number.

21434082 is an abundant number, since it is smaller than the sum of its proper divisors (22817310).

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

21434082 is a wasteful number, since it uses less digits than its factorization.

21434082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115273.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 21434082 is about 4629.6956703438. The cubic root of 21434082 is about 277.7804194001.

Adding to 21434082 its reverse (28043412), we get a palindrome (49477494).

The spelling of 21434082 in words is "twenty-one million, four hundred thirty-four thousand, eighty-two".