728887741 has 2 divisors, whose sum is σ = 728887742. Its totient is φ = 728887740.

The previous prime is 728887697. The next prime is 728887787. The reversal of 728887741 is 147788827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 543356100 + 185531641 = 23310^2 + 13621^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728887741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728887141) 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 as a sum of consecutive naturals, namely, 364443870 + 364443871.

It is an arithmetic number, because the mean of its divisors is an integer number (364443871).

Almost surely, 2^728887741 is an apocalyptic number.

It is an amenable number.

728887741 is a deficient number, since it is larger than the sum of its proper divisors (1).

728887741 is an equidigital number, since it uses as much as digits as its factorization.

728887741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1404928, while the sum is 52.

The square root of 728887741 is about 26997.9210495919. The cubic root of 728887741 is about 899.9538005092.

The spelling of 728887741 in words is "seven hundred twenty-eight million, eight hundred eighty-seven thousand, seven hundred forty-one".