72303275 has 24 divisors (see below), whose sum is σ = 98190144. Its totient is φ = 52378400.

The previous prime is 72303269. The next prime is 72303277. The reversal of 72303275 is 57230327.

It is not a de Polignac number, because 72303275 - 2⁶ = 72303211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72303277) 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 23 ways as a sum of consecutive naturals, for example, 128144 + ... + 128706.

It is an arithmetic number, because the mean of its divisors is an integer number (4091256).

Almost surely, 2^72303275 is an apocalyptic number.

72303275 is a deficient number, since it is larger than the sum of its proper divisors (25886869).

72303275 is a wasteful number, since it uses less digits than its factorization.

72303275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051 (or 1046 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 72303275 is about 8503.1332460452. The cubic root of 72303275 is about 416.6000551293.

The spelling of 72303275 in words is "seventy-two million, three hundred three thousand, two hundred seventy-five".