72007305 has 8 divisors (see below), whose sum is σ = 115211712. Its totient is φ = 38403888.

The previous prime is 72007301. The next prime is 72007339. The reversal of 72007305 is 50370027.

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

It is not a de Polignac number, because 72007305 - 2² = 72007301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72007301) 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 7 ways as a sum of consecutive naturals, for example, 2400229 + ... + 2400258.

It is an arithmetic number, because the mean of its divisors is an integer number (14401464).

Almost surely, 2^72007305 is an apocalyptic number.

It is an amenable number.

72007305 is a deficient number, since it is larger than the sum of its proper divisors (43204407).

72007305 is a wasteful number, since it uses less digits than its factorization.

72007305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800495.

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 72007305 is about 8485.7118145740. The cubic root of 72007305 is about 416.0308335904.

The spelling of 72007305 in words is "seventy-two million, seven thousand, three hundred five".