16072729 has 2 divisors, whose sum is σ = 16072730. Its totient is φ = 16072728.

The previous prime is 16072711. The next prime is 16072733. The reversal of 16072729 is 92727061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14807104 + 1265625 = 3848^2 + 1125^2 .

It is a cyclic number.

It is not a de Polignac number, because 16072729 - 2¹³ = 16064537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16072694 and 16072703.

It is not a weakly prime, because it can be changed into another prime (16072759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8036364 + 8036365.

It is an arithmetic number, because the mean of its divisors is an integer number (8036365).

Almost surely, 2^16072729 is an apocalyptic number.

It is an amenable number.

16072729 is a deficient number, since it is larger than the sum of its proper divisors (1).

16072729 is an equidigital number, since it uses as much as digits as its factorization.

16072729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 16072729 is about 4009.0808173445. The cubic root of 16072729 is about 252.3654362570.

The spelling of 16072729 in words is "sixteen million, seventy-two thousand, seven hundred twenty-nine".