77043228 has 24 divisors (see below), whose sum is σ = 179936400. Its totient is φ = 25656960.

The previous prime is 77043221. The next prime is 77043247. The reversal of 77043228 is 82234077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77043221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14248 + ... + 18896.

It is an arithmetic number, because the mean of its divisors is an integer number (7497350).

Almost surely, 2^77043228 is an apocalyptic number.

It is an amenable number.

77043228 is an abundant number, since it is smaller than the sum of its proper divisors (102893172).

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

77043228 is a wasteful number, since it uses less digits than its factorization.

77043228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037 (or 6035 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 77043228 is about 8777.4271856849. The cubic root of 77043228 is about 425.5116845106.

The spelling of 77043228 in words is "seventy-seven million, forty-three thousand, two hundred twenty-eight".