72776726 has 32 divisors (see below), whose sum is σ = 128304000. Its totient is φ = 30602880.

The previous prime is 72776701. The next prime is 72776731. The reversal of 72776726 is 62767727.

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 15 ways as a sum of consecutive naturals, for example, 15950 + ... + 19998.

It is an arithmetic number, because the mean of its divisors is an integer number (4009500).

Almost surely, 2^72776726 is an apocalyptic number.

72776726 is a deficient number, since it is larger than the sum of its proper divisors (55527274).

72776726 is a wasteful number, since it uses less digits than its factorization.

72776726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124.

The product of its digits is 345744, while the sum is 44.

The square root of 72776726 is about 8530.9276166194. The cubic root of 72776726 is about 417.5073941822.

The spelling of 72776726 in words is "seventy-two million, seven hundred seventy-six thousand, seven hundred twenty-six".