72847228 has 36 divisors (see below), whose sum is σ = 134025192. Its totient is φ = 34632000.

The previous prime is 72847223. The next prime is 72847249. The reversal of 72847228 is 82274827.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72847223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 290103 + ... + 290353.

It is an arithmetic number, because the mean of its divisors is an integer number (3722922).

Almost surely, 2^72847228 is an apocalyptic number.

It is an amenable number.

72847228 is a deficient number, since it is larger than the sum of its proper divisors (61177964).

72847228 is a wasteful number, since it uses less digits than its factorization.

72847228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 343 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 72847228 is about 8535.0587578528. The cubic root of 72847228 is about 417.6421698997.

The spelling of 72847228 in words is "seventy-two million, eight hundred forty-seven thousand, two hundred twenty-eight".