2917228 has 24 divisors (see below), whose sum is σ = 5477472. Its totient is φ = 1355904.

The previous prime is 2917223. The next prime is 2917237. The reversal of 2917228 is 8227192.

It is a self number, because there is not a number n which added to its sum of digits gives 2917228.

It is not an unprimeable number, because it can be changed into a prime (2917223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2976 + ... + 3832.

It is an arithmetic number, because the mean of its divisors is an integer number (228228).

2^2917228 is an apocalyptic number.

It is an amenable number.

2917228 is a deficient number, since it is larger than the sum of its proper divisors (2560244).

2917228 is a wasteful number, since it uses less digits than its factorization.

2917228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 919 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 2917228 is about 1707.9894613258. The cubic root of 2917228 is about 142.8861466825.

The spelling of 2917228 in words is "two million, nine hundred seventeen thousand, two hundred twenty-eight".