82750287 has 8 divisors (see below), whose sum is σ = 111888000. Its totient is φ = 54389720.

The previous prime is 82750277. The next prime is 82750289. The reversal of 82750287 is 78205728.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82750287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82750289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194037 + ... + 194462.

It is an arithmetic number, because the mean of its divisors is an integer number (13986000).

Almost surely, 2^82750287 is an apocalyptic number.

82750287 is a deficient number, since it is larger than the sum of its proper divisors (29137713).

82750287 is a wasteful number, since it uses less digits than its factorization.

82750287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388573.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 82750287 is about 9096.7184742631. The cubic root of 82750287 is about 435.7691715760.

The spelling of 82750287 in words is "eighty-two million, seven hundred fifty thousand, two hundred eighty-seven".