72140289 has 8 divisors (see below), whose sum is σ = 103586112. Its totient is φ = 44394000.

The previous prime is 72140281. The next prime is 72140297. The reversal of 72140289 is 98204127.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72140281) and next prime (72140297).

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

It is not a de Polignac number, because 72140289 - 2³ = 72140281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72140281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924837 + ... + 924914.

It is an arithmetic number, because the mean of its divisors is an integer number (12948264).

Almost surely, 2^72140289 is an apocalyptic number.

It is an amenable number.

72140289 is a deficient number, since it is larger than the sum of its proper divisors (31445823).

72140289 is a wasteful number, since it uses less digits than its factorization.

72140289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849767.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 72140289 is about 8493.5439599734. The cubic root of 72140289 is about 416.2867864214.

The spelling of 72140289 in words is "seventy-two million, one hundred forty thousand, two hundred eighty-nine".