728214379 has 4 divisors (see below), whose sum is σ = 728351800. Its totient is φ = 728076960.

The previous prime is 728214371. The next prime is 728214391. The reversal of 728214379 is 973412827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 728214379 - 2³ = 728214371 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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60429 + ... + 71470.

It is an arithmetic number, because the mean of its divisors is an integer number (182087950).

Almost surely, 2^728214379 is an apocalyptic number.

728214379 is a deficient number, since it is larger than the sum of its proper divisors (137421).

728214379 is a wasteful number, since it uses less digits than its factorization.

728214379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137420.

The product of its digits is 169344, while the sum is 43.

The square root of 728214379 is about 26985.4475412212. The cubic root of 728214379 is about 899.6765829702.

The spelling of 728214379 in words is "seven hundred twenty-eight million, two hundred fourteen thousand, three hundred seventy-nine".