7987228 has 12 divisors (see below), whose sum is σ = 14008680. Its totient is φ = 3984752.

The previous prime is 7987223. The next prime is 7987241. The reversal of 7987228 is 8227897.

It is a super-2 number, since 2×7987228² = 127591622247968, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7987223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75 + ... + 3997.

It is an arithmetic number, because the mean of its divisors is an integer number (1167390).

Almost surely, 2^7987228 is an apocalyptic number.

It is an amenable number.

7987228 is a deficient number, since it is larger than the sum of its proper divisors (6021452).

7987228 is a wasteful number, since it uses less digits than its factorization.

7987228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436 (or 4434 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 7987228 is about 2826.1684309326. The cubic root of 7987228 is about 199.8935099761.

The spelling of 7987228 in words is "seven million, nine hundred eighty-seven thousand, two hundred twenty-eight".