72802673 has 4 divisors (see below), whose sum is σ = 75313140. Its totient is φ = 70292208.

The previous prime is 72802657. The next prime is 72802679. The reversal of 72802673 is 37620827.

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 53993104 + 18809569 = 7348^2 + 4337^2 .

It is a cyclic number.

It is not a de Polignac number, because 72802673 - 2⁴ = 72802657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72802679) 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 3 ways as a sum of consecutive naturals, for example, 1255190 + ... + 1255247.

It is an arithmetic number, because the mean of its divisors is an integer number (18828285).

Almost surely, 2^72802673 is an apocalyptic number.

It is an amenable number.

72802673 is a deficient number, since it is larger than the sum of its proper divisors (2510467).

72802673 is a wasteful number, since it uses less digits than its factorization.

72802673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510466.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 72802673 is about 8532.4482418588. The cubic root of 72802673 is about 417.5570060924.

The spelling of 72802673 in words is "seventy-two million, eight hundred two thousand, six hundred seventy-three".