82221946 has 8 divisors (see below), whose sum is σ = 123670080. Its totient is φ = 40998588.

The previous prime is 82221929. The next prime is 82221947. The reversal of 82221946 is 64912228.

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

It is not an unprimeable number, because it can be changed into a prime (82221947) 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, 55276 + ... + 56743.

It is an arithmetic number, because the mean of its divisors is an integer number (15458760).

Almost surely, 2^82221946 is an apocalyptic number.

82221946 is a deficient number, since it is larger than the sum of its proper divisors (41448134).

82221946 is a wasteful number, since it uses less digits than its factorization.

82221946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112388.

The product of its digits is 13824, while the sum is 34.

The square root of 82221946 is about 9067.6317746146. The cubic root of 82221946 is about 434.8397630635.

The spelling of 82221946 in words is "eighty-two million, two hundred twenty-one thousand, nine hundred forty-six".