728773627 has 4 divisors (see below), whose sum is σ = 728987896. Its totient is φ = 728559360.

The previous prime is 728773613. The next prime is 728773651. The reversal of 728773627 is 726377827.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728773627 is a prime.

It is a super-2 number, since 2×728773627² = 1062221998821470258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728773667) 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, 101949 + ... + 108862.

It is an arithmetic number, because the mean of its divisors is an integer number (182246974).

Almost surely, 2^728773627 is an apocalyptic number.

728773627 is a deficient number, since it is larger than the sum of its proper divisors (214269).

728773627 is a wasteful number, since it uses less digits than its factorization.

728773627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214268.

The product of its digits is 1382976, while the sum is 49.

The square root of 728773627 is about 26995.8075819191. The cubic root of 728773627 is about 899.9068327426.

The spelling of 728773627 in words is "seven hundred twenty-eight million, seven hundred seventy-three thousand, six hundred twenty-seven".