82788245 has 8 divisors (see below), whose sum is σ = 100462680. Its totient is φ = 65486080.

The previous prime is 82788241. The next prime is 82788253. The reversal of 82788245 is 54288728.

It can be written as a sum of positive squares in 4 ways, for example, as 14641 + 82773604 = 121^2 + 9098^2 .

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

It is not a de Polignac number, because 82788245 - 2² = 82788241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82788196 and 82788205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82788241) 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, 92576 + ... + 93465.

It is an arithmetic number, because the mean of its divisors is an integer number (12557835).

Almost surely, 2^82788245 is an apocalyptic number.

It is an amenable number.

82788245 is a deficient number, since it is larger than the sum of its proper divisors (17674435).

82788245 is a wasteful number, since it uses less digits than its factorization.

82788245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186135.

The product of its digits is 286720, while the sum is 44.

The square root of 82788245 is about 9098.8045918131. The cubic root of 82788245 is about 435.8357912754.

The spelling of 82788245 in words is "eighty-two million, seven hundred eighty-eight thousand, two hundred forty-five".