72928763 has 4 divisors (see below), whose sum is σ = 74017320. Its totient is φ = 71840208.

The previous prime is 72928753. The next prime is 72928777. The reversal of 72928763 is 36782927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36782927 = 293 ⋅125539.

It is a cyclic number.

It is not a de Polignac number, because 72928763 - 2⁴ = 72928747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72928753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544178 + ... + 544311.

It is an arithmetic number, because the mean of its divisors is an integer number (18504330).

Almost surely, 2^72928763 is an apocalyptic number.

72928763 is a deficient number, since it is larger than the sum of its proper divisors (1088557).

72928763 is a wasteful number, since it uses less digits than its factorization.

72928763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088556.

The product of its digits is 254016, while the sum is 44.

The square root of 72928763 is about 8539.8338976821. The cubic root of 72928763 is about 417.7979285498.

It can be divided in two parts, 729 and 28763, that added together give a palindrome (29492).

The spelling of 72928763 in words is "seventy-two million, nine hundred twenty-eight thousand, seven hundred sixty-three".