82499928 has 144 divisors (see below), whose sum is σ = 251308440. Its totient is φ = 22498560.

The previous prime is 82499917. The next prime is 82499933. The reversal of 82499928 is 82999428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1130100 + ... + 1130172.

Almost surely, 2^82499928 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 82499928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125654220).

82499928 is an abundant number, since it is smaller than the sum of its proper divisors (168808512).

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

82499928 is a wasteful number, since it uses less digits than its factorization.

82499928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 116 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 82499928 is about 9082.9470988221. The cubic root of 82499928 is about 435.3292579174.

Subtracting 82499928 from its reverse (82999428), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 82499928 in words is "eighty-two million, four hundred ninety-nine thousand, nine hundred twenty-eight".