74255728272 has 80 divisors (see below), whose sum is σ = 221575943232. Its totient is φ = 21178101760.

The previous prime is 74255728259. The next prime is 74255728273. The reversal of 74255728272 is 27282755247.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (74255728273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4127373 + ... + 4145324.

Almost surely, 2^74255728272 is an apocalyptic number.

It is an amenable number.

74255728272 is an abundant number, since it is smaller than the sum of its proper divisors (147320214960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74255728272 is a wasteful number, since it uses less digits than its factorization.

74255728272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8272736 (or 8272730 counting only the distinct ones).

The product of its digits is 4390400, while the sum is 51.

The spelling of 74255728272 in words is "seventy-four billion, two hundred fifty-five million, seven hundred twenty-eight thousand, two hundred seventy-two".