1028406733172 has 96 divisors (see below), whose sum is σ = 2345726218752. Its totient is φ = 382844952576.

The previous prime is 1028406733141. The next prime is 1028406733199. The reversal of 1028406733172 is 2713376048201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51121388 + ... + 51141500.

It is an arithmetic number, because the mean of its divisors is an integer number (24434648112).

Almost surely, 2^{1028406733172} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1028406733172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1172863109376).

1028406733172 is an abundant number, since it is smaller than the sum of its proper divisors (1317319485580).

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

1028406733172 is a wasteful number, since it uses less digits than its factorization.

1028406733172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28417 (or 28415 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 1028406733172 in words is "one trillion, twenty-eight billion, four hundred six million, seven hundred thirty-three thousand, one hundred seventy-two".