82015728 has 40 divisors (see below), whose sum is σ = 212452176. Its totient is φ = 27264000.

The previous prime is 82015727. The next prime is 82015729. The reversal of 82015728 is 82751028.

It is an interprime number because it is at equal distance from previous prime (82015727) and next prime (82015729).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82015727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17118 + ... + 21378.

Almost surely, 2^82015728 is an apocalyptic number.

It is an amenable number.

82015728 is an abundant number, since it is smaller than the sum of its proper divisors (130436448).

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

82015728 is a wasteful number, since it uses less digits than its factorization.

82015728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673 (or 4667 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 82015728 is about 9056.2535300200. The cubic root of 82015728 is about 434.4759232259.

The spelling of 82015728 in words is "eighty-two million, fifteen thousand, seven hundred twenty-eight".