728214377 has 4 divisors (see below), whose sum is σ = 794415696. Its totient is φ = 662013060.

The previous prime is 728214371. The next prime is 728214391. The reversal of 728214377 is 773412827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 728214377 - 2⁶ = 728214313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728214371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33100643 + ... + 33100664.

It is an arithmetic number, because the mean of its divisors is an integer number (198603924).

Almost surely, 2^728214377 is an apocalyptic number.

It is an amenable number.

728214377 is a deficient number, since it is larger than the sum of its proper divisors (66201319).

728214377 is a wasteful number, since it uses less digits than its factorization.

728214377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66201318.

The product of its digits is 131712, while the sum is 41.

The square root of 728214377 is about 26985.4475041642. The cubic root of 728214377 is about 899.6765821466.

The spelling of 728214377 in words is "seven hundred twenty-eight million, two hundred fourteen thousand, three hundred seventy-seven".