72723134 has 16 divisors (see below), whose sum is σ = 120510720. Its totient is φ = 32636760.

The previous prime is 72723113. The next prime is 72723137. The reversal of 72723134 is 43132727.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 72723097 and 72723106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72723137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19184 + ... + 22659.

It is an arithmetic number, because the mean of its divisors is an integer number (7531920).

Almost surely, 2^72723134 is an apocalyptic number.

72723134 is a deficient number, since it is larger than the sum of its proper divisors (47787586).

72723134 is a wasteful number, since it uses less digits than its factorization.

72723134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41935.

The product of its digits is 7056, while the sum is 29.

The square root of 72723134 is about 8527.7859963768. The cubic root of 72723134 is about 417.4048863614.

The spelling of 72723134 in words is "seventy-two million, seven hundred twenty-three thousand, one hundred thirty-four".