77928227 has 8 divisors (see below), whose sum is σ = 83991600. Its totient is φ = 71874720.

The previous prime is 77928223. The next prime is 77928229. The reversal of 77928227 is 72282977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77928227 - 2² = 77928223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77928223) 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, 27524 + ... + 30222.

It is an arithmetic number, because the mean of its divisors is an integer number (10498950).

Almost surely, 2^77928227 is an apocalyptic number.

77928227 is a deficient number, since it is larger than the sum of its proper divisors (6063373).

77928227 is a wasteful number, since it uses less digits than its factorization.

77928227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4933.

The product of its digits is 197568, while the sum is 44.

The square root of 77928227 is about 8827.6965851801. The cubic root of 77928227 is about 427.1347760161.

The spelling of 77928227 in words is "seventy-seven million, nine hundred twenty-eight thousand, two hundred twenty-seven".