72382729 has 4 divisors (see below), whose sum is σ = 72530640. Its totient is φ = 72234820.

The previous prime is 72382711. The next prime is 72382733. The reversal of 72382729 is 92728327.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72382729 - 2⁷ = 72382601 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72382691 and 72382700.

It is not an unprimeable number, because it can be changed into a prime (72382769) 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, 73219 + ... + 74200.

It is an arithmetic number, because the mean of its divisors is an integer number (18132660).

Almost surely, 2^72382729 is an apocalyptic number.

It is an amenable number.

72382729 is a deficient number, since it is larger than the sum of its proper divisors (147911).

72382729 is a wasteful number, since it uses less digits than its factorization.

72382729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147910.

The product of its digits is 84672, while the sum is 40.

The square root of 72382729 is about 8507.8040057350. The cubic root of 72382729 is about 416.7525997338.

The spelling of 72382729 in words is "seventy-two million, three hundred eighty-two thousand, seven hundred twenty-nine".