728880019 has 8 divisors (see below), whose sum is σ = 841594208. Its totient is φ = 618312960.

The previous prime is 728879989. The next prime is 728880043. The reversal of 728880019 is 910088827.

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 728880019 - 2⁷ = 728879891 is a prime.

It is a super-2 number, since 2×728880019² = 1062532164194880722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (728880059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536052 + ... + 537409.

It is an arithmetic number, because the mean of its divisors is an integer number (105199276).

Almost surely, 2^728880019 is an apocalyptic number.

728880019 is a deficient number, since it is larger than the sum of its proper divisors (112714189).

728880019 is a wasteful number, since it uses less digits than its factorization.

728880019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073565.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 728880019 is about 26997.7780382016. The cubic root of 728880019 is about 899.9506223939.

The spelling of 728880019 in words is "seven hundred twenty-eight million, eight hundred eighty thousand, nineteen".