76668228 has 192 divisors, whose sum is σ = 254016000. Its totient is φ = 19450368.

The previous prime is 76668209. The next prime is 76668247. The reversal of 76668228 is 82286667.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (76668209) and next prime (76668247).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 284878 + ... + 285146.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^76668228 is an apocalyptic number.

76668228 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76668228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127008000).

76668228 is an abundant number, since it is smaller than the sum of its proper divisors (177347772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76668228 is a wasteful number, since it uses less digits than its factorization.

76668228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 323 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 76668228 is about 8756.0395156715. The cubic root of 76668228 is about 424.8201832154.

The spelling of 76668228 in words is "seventy-six million, six hundred sixty-eight thousand, two hundred twenty-eight".