72728000074 has 8 divisors (see below), whose sum is σ = 109351127268. Its totient is φ = 36277624320.

The previous prime is 72728000069. The next prime is 72728000123. The reversal of 72728000074 is 47000082727.

It can be written as a sum of positive squares in 2 ways, for example, as 70911961849 + 1816038225 = 266293^2 + 42615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 72727999997 and 72728000042.

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, 43186807 + ... + 43188490.

Almost surely, 2^72728000074 is an apocalyptic number.

72728000074 is a deficient number, since it is larger than the sum of its proper divisors (36623127194).

72728000074 is a wasteful number, since it uses less digits than its factorization.

72728000074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86375720.

The product of its (nonzero) digits is 43904, while the sum is 37.

The spelling of 72728000074 in words is "seventy-two billion, seven hundred twenty-eight million, seventy-four", and thus it is an aban number.