72673028 has 12 divisors (see below), whose sum is σ = 134658972. Its totient is φ = 34199040.

The previous prime is 72673001. The next prime is 72673049. The reversal of 72673028 is 82037627.

It can be written as a sum of positive squares in 2 ways, for example, as 27541504 + 45131524 = 5248^2 + 6718^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 534293 + ... + 534428.

It is an arithmetic number, because the mean of its divisors is an integer number (11221581).

Almost surely, 2^72673028 is an apocalyptic number.

It is an amenable number.

72673028 is a deficient number, since it is larger than the sum of its proper divisors (61985944).

72673028 is a wasteful number, since it uses less digits than its factorization.

72673028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068742 (or 1068740 counting only the distinct ones).

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

The square root of 72673028 is about 8524.8476819237. The cubic root of 72673028 is about 417.3090008054.

The spelling of 72673028 in words is "seventy-two million, six hundred seventy-three thousand, twenty-eight".