82280515 has 8 divisors (see below), whose sum is σ = 100410480. Its totient is φ = 64708512.

The previous prime is 82280509. The next prime is 82280519. The reversal of 82280515 is 51508228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82280515 - 2⁵ = 82280483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82280519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139164 + ... + 139753.

It is an arithmetic number, because the mean of its divisors is an integer number (12551310).

Almost surely, 2^82280515 is an apocalyptic number.

82280515 is a deficient number, since it is larger than the sum of its proper divisors (18129965).

82280515 is a wasteful number, since it uses less digits than its factorization.

82280515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278981.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 82280515 is about 9070.8607640069. The cubic root of 82280515 is about 434.9429880803.

The spelling of 82280515 in words is "eighty-two million, two hundred eighty thousand, five hundred fifteen".