72808773 has 16 divisors (see below), whose sum is σ = 104535360. Its totient is φ = 44907776.

The previous prime is 72808753. The next prime is 72808829. The reversal of 72808773 is 37780827.

It is a cyclic number.

It is not a de Polignac number, because 72808773 - 2⁶ = 72808709 is a prime.

It is a super-2 number, since 2×72808773² = 10602234851531058, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72808753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9090 + ... + 15107.

It is an arithmetic number, because the mean of its divisors is an integer number (6533460).

Almost surely, 2^72808773 is an apocalyptic number.

It is an amenable number.

72808773 is a deficient number, since it is larger than the sum of its proper divisors (31726587).

72808773 is a wasteful number, since it uses less digits than its factorization.

72808773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24276.

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 72808773 is about 8532.8056933227. The cubic root of 72808773 is about 417.5686678739.

The spelling of 72808773 in words is "seventy-two million, eight hundred eight thousand, seven hundred seventy-three".