72805678 has 32 divisors (see below), whose sum is σ = 121857120. Its totient is φ = 32348160.

The previous prime is 72805669. The next prime is 72805687. The reversal of 72805678 is 87650827.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72805669) and next prime (72805687).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232450 + ... + 232762.

It is an arithmetic number, because the mean of its divisors is an integer number (3808035).

Almost surely, 2^72805678 is an apocalyptic number.

72805678 is a deficient number, since it is larger than the sum of its proper divisors (49051442).

72805678 is a wasteful number, since it uses less digits than its factorization.

72805678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 72805678 is about 8532.6243325251. The cubic root of 72805678 is about 417.5627510350.

The spelling of 72805678 in words is "seventy-two million, eight hundred five thousand, six hundred seventy-eight".