72858833 has 4 divisors (see below), whose sum is σ = 73323060. Its totient is φ = 72394608.

The previous prime is 72858829. The next prime is 72858857. The reversal of 72858833 is 33885827.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14992384 + 57866449 = 3872^2 + 7607^2 .

It is a cyclic number.

It is not a de Polignac number, because 72858833 - 2² = 72858829 is a prime.

It is a super-2 number, since 2×72858833² = 10616819092243778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72858803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231878 + ... + 232191.

It is an arithmetic number, because the mean of its divisors is an integer number (18330765).

Almost surely, 2^72858833 is an apocalyptic number.

It is an amenable number.

72858833 is a deficient number, since it is larger than the sum of its proper divisors (464227).

72858833 is a wasteful number, since it uses less digits than its factorization.

72858833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464226.

The product of its digits is 322560, while the sum is 44.

The square root of 72858833 is about 8535.7385737849. The cubic root of 72858833 is about 417.6643463557.

The spelling of 72858833 in words is "seventy-two million, eight hundred fifty-eight thousand, eight hundred thirty-three".