732721073 has 16 divisors (see below), whose sum is σ = 887925120. Its totient is φ = 590633856.

The previous prime is 732721057. The next prime is 732721109. The reversal of 732721073 is 370127237.

It is a cyclic number.

It is not a de Polignac number, because 732721073 - 2⁴ = 732721057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (732721043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1886 + ... + 38327.

It is an arithmetic number, because the mean of its divisors is an integer number (55495320).

Almost surely, 2^732721073 is an apocalyptic number.

It is an amenable number.

732721073 is a deficient number, since it is larger than the sum of its proper divisors (155204047).

732721073 is a wasteful number, since it uses less digits than its factorization.

732721073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40376.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 732721073 is about 27068.8210493180. The cubic root of 732721073 is about 901.5287076832.

The spelling of 732721073 in words is "seven hundred thirty-two million, seven hundred twenty-one thousand, seventy-three".