72756678 has 16 divisors (see below), whose sum is σ = 146157120. Its totient is φ = 24144936.

The previous prime is 72756661. The next prime is 72756703. The reversal of 72756678 is 87665727.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 25348 + ... + 28071.

It is an arithmetic number, because the mean of its divisors is an integer number (9134820).

Almost surely, 2^72756678 is an apocalyptic number.

72756678 is an abundant number, since it is smaller than the sum of its proper divisors (73400442).

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

72756678 is a wasteful number, since it uses less digits than its factorization.

72756678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53651.

The product of its digits is 987840, while the sum is 48.

The square root of 72756678 is about 8529.7525169257. The cubic root of 72756678 is about 417.4690533673.

The spelling of 72756678 in words is "seventy-two million, seven hundred fifty-six thousand, six hundred seventy-eight".