72538678 has 8 divisors (see below), whose sum is σ = 111338568. Its totient is φ = 35425824.

The previous prime is 72538663. The next prime is 72538681. The reversal of 72538678 is 87683527.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 421651 + ... + 421822.

It is an arithmetic number, because the mean of its divisors is an integer number (13917321).

Almost surely, 2^72538678 is an apocalyptic number.

72538678 is a deficient number, since it is larger than the sum of its proper divisors (38799890).

72538678 is a wasteful number, since it uses less digits than its factorization.

72538678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843518.

The product of its digits is 564480, while the sum is 46.

The square root of 72538678 is about 8516.9641304869. The cubic root of 72538678 is about 417.0516836568.

It can be divided in two parts, 7253 and 8678, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 72538678 in words is "seventy-two million, five hundred thirty-eight thousand, six hundred seventy-eight".