728311152428 has 12 divisors (see below), whose sum is σ = 1286237586480. Its totient is φ = 360814699152.

The previous prime is 728311152367. The next prime is 728311152473. The reversal of 728311152428 is 824251113827.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 835218776 + ... + 835219647.

It is an arithmetic number, because the mean of its divisors is an integer number (107186465540).

Almost surely, 2^728311152428 is an apocalyptic number.

It is an amenable number.

728311152428 is a deficient number, since it is larger than the sum of its proper divisors (557926434052).

728311152428 is a wasteful number, since it uses less digits than its factorization.

728311152428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670438536 (or 1670438534 counting only the distinct ones).

The product of its digits is 215040, while the sum is 44.

The spelling of 728311152428 in words is "seven hundred twenty-eight billion, three hundred eleven million, one hundred fifty-two thousand, four hundred twenty-eight".