82240297 has 4 divisors (see below), whose sum is σ = 82699920. Its totient is φ = 81780676.

The previous prime is 82240273. The next prime is 82240313. The reversal of 82240297 is 79204228.

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 not a de Polignac number, because 82240297 - 2¹⁹ = 81716009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82240217) 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, 229543 + ... + 229900.

It is an arithmetic number, because the mean of its divisors is an integer number (20674980).

Almost surely, 2^82240297 is an apocalyptic number.

It is an amenable number.

82240297 is a deficient number, since it is larger than the sum of its proper divisors (459623).

82240297 is a wasteful number, since it uses less digits than its factorization.

82240297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459622.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 82240297 is about 9068.6436141244. The cubic root of 82240297 is about 434.8721110813.

The spelling of 82240297 in words is "eighty-two million, two hundred forty thousand, two hundred ninety-seven".