72756029 has 4 divisors (see below), whose sum is σ = 72773376. Its totient is φ = 72738684.

The previous prime is 72756001. The next prime is 72756031. The reversal of 72756029 is 92065727.

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 72756029 - 2⁸ = 72755773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72755983 and 72756001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72756049) 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, 1982 + ... + 12224.

It is an arithmetic number, because the mean of its divisors is an integer number (18193344).

Almost surely, 2^72756029 is an apocalyptic number.

It is an amenable number.

72756029 is a deficient number, since it is larger than the sum of its proper divisors (17347).

72756029 is a wasteful number, since it uses less digits than its factorization.

72756029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17346.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 72756029 is about 8529.7144735331. The cubic root of 72756029 is about 417.4678120690.

The spelling of 72756029 in words is "seventy-two million, seven hundred fifty-six thousand, twenty-nine".