728632177 has 12 divisors (see below), whose sum is σ = 901706880. Its totient is φ = 576499248.

The previous prime is 728632139. The next prime is 728632187. The reversal of 728632177 is 771236827.

It is not a de Polignac number, because 728632177 - 2²³ = 720243569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728632127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306777 + ... + 309142.

It is an arithmetic number, because the mean of its divisors is an integer number (75142240).

Almost surely, 2^728632177 is an apocalyptic number.

It is an amenable number.

728632177 is a deficient number, since it is larger than the sum of its proper divisors (173074703).

728632177 is a wasteful number, since it uses less digits than its factorization.

728632177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615952 (or 615939 counting only the distinct ones).

The product of its digits is 197568, while the sum is 43.

The square root of 728632177 is about 26993.1876035417. The cubic root of 728632177 is about 899.8486070452.

The spelling of 728632177 in words is "seven hundred twenty-eight million, six hundred thirty-two thousand, one hundred seventy-seven".