82642028 has 18 divisors (see below), whose sum is σ = 168235956. Its totient is φ = 35417928.

The previous prime is 82642009. The next prime is 82642031. The reversal of 82642028 is 82024628.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 82641985 and 82642003.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210626 + ... + 211017.

It is an arithmetic number, because the mean of its divisors is an integer number (9346442).

Almost surely, 2^82642028 is an apocalyptic number.

It is an amenable number.

82642028 is an abundant number, since it is smaller than the sum of its proper divisors (85593928).

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

82642028 is a wasteful number, since it uses less digits than its factorization.

82642028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421661 (or 421652 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 82642028 is about 9090.7660843297. The cubic root of 82642028 is about 435.5790553269.

The spelling of 82642028 in words is "eighty-two million, six hundred forty-two thousand, twenty-eight".