82487128 has 48 divisors (see below), whose sum is σ = 167511240. Its totient is φ = 37946880.

The previous prime is 82487123. The next prime is 82487147. The reversal of 82487128 is 82178428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82487123) 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, 505975 + ... + 506137.

Almost surely, 2^82487128 is an apocalyptic number.

It is an amenable number.

82487128 is an abundant number, since it is smaller than the sum of its proper divisors (85024112).

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

82487128 is a wasteful number, since it uses less digits than its factorization.

82487128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 243 counting only the distinct ones).

The product of its digits is 57344, while the sum is 40.

The square root of 82487128 is about 9082.2424543722. The cubic root of 82487128 is about 435.3067427353.

It can be divided in two parts, 8248 and 7128, that added together give a square (15376 = 124²).

The spelling of 82487128 in words is "eighty-two million, four hundred eighty-seven thousand, one hundred twenty-eight".