82931505 has 8 divisors (see below), whose sum is σ = 132690432. Its totient is φ = 44230128.

The previous prime is 82931501. The next prime is 82931507. The reversal of 82931505 is 50513928.

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

It is not a de Polignac number, because 82931505 - 2² = 82931501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82931501) 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, 2764369 + ... + 2764398.

It is an arithmetic number, because the mean of its divisors is an integer number (16586304).

Almost surely, 2^82931505 is an apocalyptic number.

It is an amenable number.

82931505 is a deficient number, since it is larger than the sum of its proper divisors (49758927).

82931505 is a wasteful number, since it uses less digits than its factorization.

82931505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528775.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 82931505 is about 9106.6736517787. The cubic root of 82931505 is about 436.0870421427.

It can be divided in two parts, 82931 and 505, that added together give a triangular number (83436 = T₄₀₈).

The spelling of 82931505 in words is "eighty-two million, nine hundred thirty-one thousand, five hundred five".