82280297 has 4 divisors (see below), whose sum is σ = 89760336. Its totient is φ = 74800260.

The previous prime is 82280249. The next prime is 82280329. The reversal of 82280297 is 79208228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82280297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82280297.

It is not an unprimeable number, because it can be changed into a prime (82280227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3740003 + ... + 3740024.

It is an arithmetic number, because the mean of its divisors is an integer number (22440084).

Almost surely, 2^82280297 is an apocalyptic number.

It is an amenable number.

82280297 is a deficient number, since it is larger than the sum of its proper divisors (7480039).

82280297 is a wasteful number, since it uses less digits than its factorization.

82280297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7480038.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 82280297 is about 9070.8487474988. The cubic root of 82280297 is about 434.9426039567.

The spelling of 82280297 in words is "eighty-two million, two hundred eighty thousand, two hundred ninety-seven".