82421946 has 24 divisors (see below), whose sum is σ = 178748544. Its totient is φ = 27448200.

The previous prime is 82421929. The next prime is 82421947. The reversal of 82421946 is 64912428.

It is a self number, because there is not a number n which added to its sum of digits gives 82421946.

It is not an unprimeable number, because it can be changed into a prime (82421947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33945 + ... + 36291.

It is an arithmetic number, because the mean of its divisors is an integer number (7447856).

Almost surely, 2^82421946 is an apocalyptic number.

82421946 is an abundant number, since it is smaller than the sum of its proper divisors (96326598).

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

82421946 is a wasteful number, since it uses less digits than its factorization.

82421946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4306 (or 4303 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 82421946 is about 9078.6533142311. The cubic root of 82421946 is about 435.1920515428.

The spelling of 82421946 in words is "eighty-two million, four hundred twenty-one thousand, nine hundred forty-six".