73128548 has 6 divisors (see below), whose sum is σ = 127974966. Its totient is φ = 36564272.

The previous prime is 73128547. The next prime is 73128589. The reversal of 73128548 is 84582137.

It can be written as a sum of positive squares in only one way, i.e., 56220004 + 16908544 = 7498^2 + 4112^2 .

It is not an unprimeable number, because it can be changed into a prime (73128547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9141065 + ... + 9141072.

It is an arithmetic number, because the mean of its divisors is an integer number (21329161).

Almost surely, 2^73128548 is an apocalyptic number.

It is an amenable number.

73128548 is a deficient number, since it is larger than the sum of its proper divisors (54846418).

73128548 is a wasteful number, since it uses less digits than its factorization.

73128548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18282141 (or 18282139 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 73128548 is about 8551.5231391840. The cubic root of 73128548 is about 418.1790934519.

The spelling of 73128548 in words is "seventy-three million, one hundred twenty-eight thousand, five hundred forty-eight".