82240745 has 4 divisors (see below), whose sum is σ = 98688900. Its totient is φ = 65792592.

The previous prime is 82240733. The next prime is 82240757. The reversal of 82240745 is 54704228.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (82240733) and next prime (82240757).

It can be written as a sum of positive squares in 2 ways, for example, as 52940176 + 29300569 = 7276^2 + 5413^2 .

It is a cyclic number.

It is not a de Polignac number, because 82240745 - 2¹⁴ = 82224361 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8224070 + ... + 8224079.

It is an arithmetic number, because the mean of its divisors is an integer number (24672225).

Almost surely, 2^82240745 is an apocalyptic number.

It is an amenable number.

82240745 is a deficient number, since it is larger than the sum of its proper divisors (16448155).

82240745 is a wasteful number, since it uses less digits than its factorization.

82240745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16448154.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 82240745 is about 9068.6683145873. The cubic root of 82240745 is about 434.8729007280.

The spelling of 82240745 in words is "eighty-two million, two hundred forty thousand, seven hundred forty-five".