72030871 has 8 divisors (see below), whose sum is σ = 81995904. Its totient is φ = 62635320.

The previous prime is 72030859. The next prime is 72030899. The reversal of 72030871 is 17803027.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72030871 - 2⁵ = 72030839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72030811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142101 + ... + 142606.

It is an arithmetic number, because the mean of its divisors is an integer number (10249488).

Almost surely, 2^72030871 is an apocalyptic number.

72030871 is a deficient number, since it is larger than the sum of its proper divisors (9965033).

72030871 is a wasteful number, since it uses less digits than its factorization.

72030871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284741.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 72030871 is about 8487.1002704104. The cubic root of 72030871 is about 416.0762137699.

Adding to 72030871 its reverse (17803027), we get a palindrome (89833898).

The spelling of 72030871 in words is "seventy-two million, thirty thousand, eight hundred seventy-one".