82421706 has 8 divisors (see below), whose sum is σ = 164843424. Its totient is φ = 27473900.

The previous prime is 82421701. The next prime is 82421737. The reversal of 82421706 is 60712428.

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

82421706 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (82421701) 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, 6868470 + ... + 6868481.

It is an arithmetic number, because the mean of its divisors is an integer number (20605428).

Almost surely, 2^82421706 is an apocalyptic number.

82421706 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.

82421706 is a wasteful number, since it uses less digits than its factorization.

82421706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13736956.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 82421706 is about 9078.6400964021. The cubic root of 82421706 is about 435.1916291383.

The spelling of 82421706 in words is "eighty-two million, four hundred twenty-one thousand, seven hundred six".