72147235 has 8 divisors (see below), whose sum is σ = 91669536. Its totient is φ = 54322560.

The previous prime is 72147233. The next prime is 72147239. The reversal of 72147235 is 53274127.

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

It is not a de Polignac number, because 72147235 - 2¹ = 72147233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72147197 and 72147206.

It is not an unprimeable number, because it can be changed into a prime (72147233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424311 + ... + 424480.

It is an arithmetic number, because the mean of its divisors is an integer number (11458692).

Almost surely, 2^72147235 is an apocalyptic number.

72147235 is a deficient number, since it is larger than the sum of its proper divisors (19522301).

72147235 is a wasteful number, since it uses less digits than its factorization.

72147235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848813.

The product of its digits is 11760, while the sum is 31.

The square root of 72147235 is about 8493.9528489391. The cubic root of 72147235 is about 416.3001466637.

The spelling of 72147235 in words is "seventy-two million, one hundred forty-seven thousand, two hundred thirty-five".