72756375 has 16 divisors (see below), whose sum is σ = 121067232. Its totient is φ = 38803200.

The previous prime is 72756373. The next prime is 72756391. The reversal of 72756375 is 57365727.

It is not a de Polignac number, because 72756375 - 2¹ = 72756373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72756373) 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 15 ways as a sum of consecutive naturals, for example, 96634 + ... + 97383.

It is an arithmetic number, because the mean of its divisors is an integer number (7566702).

Almost surely, 2^72756375 is an apocalyptic number.

72756375 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

72756375 is a deficient number, since it is larger than the sum of its proper divisors (48310857).

72756375 is a wasteful number, since it uses less digits than its factorization.

72756375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194035 (or 194025 counting only the distinct ones).

The product of its digits is 308700, while the sum is 42.

The square root of 72756375 is about 8529.7347555478. The cubic root of 72756375 is about 417.4684738407.

The spelling of 72756375 in words is "seventy-two million, seven hundred fifty-six thousand, three hundred seventy-five".