72750233 has 4 divisors (see below), whose sum is σ = 72826128. Its totient is φ = 72674340.

The previous prime is 72750203. The next prime is 72750269. The reversal of 72750233 is 33205727.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33205727 = 83 ⋅400069.

It is a cyclic number.

It is not a de Polignac number, because 72750233 - 2⁶ = 72750169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72750196 and 72750205.

It is not an unprimeable number, because it can be changed into a prime (72750203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36491 + ... + 38432.

It is an arithmetic number, because the mean of its divisors is an integer number (18206532).

Almost surely, 2^72750233 is an apocalyptic number.

It is an amenable number.

72750233 is a deficient number, since it is larger than the sum of its proper divisors (75895).

72750233 is an equidigital number, since it uses as much as digits as its factorization.

72750233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75894.

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

The square root of 72750233 is about 8529.3747133069. The cubic root of 72750233 is about 417.4567261255.

The spelling of 72750233 in words is "seventy-two million, seven hundred fifty thousand, two hundred thirty-three".