73272644 has 6 divisors (see below), whose sum is σ = 128227134. Its totient is φ = 36636320.

The previous prime is 73272629. The next prime is 73272679. The reversal of 73272644 is 44627237.

It can be written as a sum of positive squares in only one way, i.e., 55950400 + 17322244 = 7480^2 + 4162^2 .

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 as a sum of consecutive naturals, namely, 9159077 + ... + 9159084.

It is an arithmetic number, because the mean of its divisors is an integer number (21371189).

Almost surely, 2^73272644 is an apocalyptic number.

It is an amenable number.

73272644 is a deficient number, since it is larger than the sum of its proper divisors (54954490).

73272644 is a wasteful number, since it uses less digits than its factorization.

73272644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18318165 (or 18318163 counting only the distinct ones).

The product of its digits is 56448, while the sum is 35.

The square root of 73272644 is about 8559.9441586964. The cubic root of 73272644 is about 418.4535799609.

The spelling of 73272644 in words is "seventy-three million, two hundred seventy-two thousand, six hundred forty-four".