72272888 has 16 divisors (see below), whose sum is σ = 137421360. Its totient is φ = 35627200.

The previous prime is 72272881. The next prime is 72272929. The reversal of 72272888 is 88827227.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72272881) 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, 63053 + ... + 64188.

It is an arithmetic number, because the mean of its divisors is an integer number (8588835).

Almost surely, 2^72272888 is an apocalyptic number.

It is an amenable number.

72272888 is a deficient number, since it is larger than the sum of its proper divisors (65148472).

72272888 is a wasteful number, since it uses less digits than its factorization.

72272888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127318 (or 127314 counting only the distinct ones).

The product of its digits is 200704, while the sum is 44.

The square root of 72272888 is about 8501.3462463306. The cubic root of 72272888 is about 416.5416852527.

The spelling of 72272888 in words is "seventy-two million, two hundred seventy-two thousand, eight hundred eighty-eight".