72007756 has 24 divisors (see below), whose sum is σ = 132864480. Its totient is φ = 34079232.

The previous prime is 72007723. The next prime is 72007787. The reversal of 72007756 is 65770027.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4890 + ... + 12958.

It is an arithmetic number, because the mean of its divisors is an integer number (5536020).

Almost surely, 2^72007756 is an apocalyptic number.

It is an amenable number.

72007756 is a deficient number, since it is larger than the sum of its proper divisors (60856724).

72007756 is a wasteful number, since it uses less digits than its factorization.

72007756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8193 (or 8191 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 72007756 is about 8485.7383886142. The cubic root of 72007756 is about 416.0317021575.

The spelling of 72007756 in words is "seventy-two million, seven thousand, seven hundred fifty-six".