72295345 has 12 divisors (see below), whose sum is σ = 88095924. Its totient is φ = 56955360.

The previous prime is 72295343. The next prime is 72295369. The reversal of 72295345 is 54359227.

It can be written as a sum of positive squares in 2 ways, for example, as 41370624 + 30924721 = 6432^2 + 5561^2 .

It is not a de Polignac number, because 72295345 - 2¹ = 72295343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72295343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20835 + ... + 24055.

It is an arithmetic number, because the mean of its divisors is an integer number (7341327).

Almost surely, 2^72295345 is an apocalyptic number.

It is an amenable number.

72295345 is a deficient number, since it is larger than the sum of its proper divisors (15800579).

72295345 is an equidigital number, since it uses as much as digits as its factorization.

72295345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360 (or 3293 counting only the distinct ones).

The product of its digits is 75600, while the sum is 37.

The square root of 72295345 is about 8502.6669345565. Note that the first 3 decimals coincide. The cubic root of 72295345 is about 416.5848241031.

The spelling of 72295345 in words is "seventy-two million, two hundred ninety-five thousand, three hundred forty-five".