72277792 has 24 divisors (see below), whose sum is σ = 142548336. Its totient is φ = 36075072.

The previous prime is 72277789. The next prime is 72277801. The reversal of 72277792 is 29777227.

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 3 ways as a sum of consecutive naturals, for example, 20203 + ... + 23509.

It is an arithmetic number, because the mean of its divisors is an integer number (5939514).

Almost surely, 2^72277792 is an apocalyptic number.

It is an amenable number.

72277792 is a deficient number, since it is larger than the sum of its proper divisors (70270544).

72277792 is a wasteful number, since it uses less digits than its factorization.

72277792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000 (or 3992 counting only the distinct ones).

The product of its digits is 172872, while the sum is 43.

The square root of 72277792 is about 8501.6346663451. The cubic root of 72277792 is about 416.5511063707.

The spelling of 72277792 in words is "seventy-two million, two hundred seventy-seven thousand, seven hundred ninety-two".