72271623 has 8 divisors (see below), whose sum is σ = 96468336. Its totient is φ = 48128000.

The previous prime is 72271613. The next prime is 72271631. The reversal of 72271623 is 32617227.

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

It is a cyclic number.

It is not a de Polignac number, because 72271623 - 2⁶ = 72271559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72271613) 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, 9978 + ... + 15623.

It is an arithmetic number, because the mean of its divisors is an integer number (12058542).

Almost surely, 2^72271623 is an apocalyptic number.

72271623 is a deficient number, since it is larger than the sum of its proper divisors (24196713).

72271623 is a wasteful number, since it uses less digits than its factorization.

72271623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26545.

The product of its digits is 7056, while the sum is 30.

The square root of 72271623 is about 8501.2718460240. The cubic root of 72271623 is about 416.5392549808.

The spelling of 72271623 in words is "seventy-two million, two hundred seventy-one thousand, six hundred twenty-three".