82012421028 has 72 divisors (see below), whose sum is σ = 210573109600. Its totient is φ = 24772594176.

The previous prime is 82012421021. The next prime is 82012421093.

82012421028 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 82012420986 and 82012421004.

It is not an unprimeable number, because it can be changed into a prime (82012421021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219373 + ... + 460596.

Almost surely, 2^82012421028 is an apocalyptic number.

It is an amenable number.

82012421028 is an abundant number, since it is smaller than the sum of its proper divisors (128560688572).

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

82012421028 is a wasteful number, since it uses less digits than its factorization.

82012421028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680041 (or 680016 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The spelling of 82012421028 in words is "eighty-two billion, twelve million, four hundred twenty-one thousand, twenty-eight".