72127307 has 8 divisors (see below), whose sum is σ = 82754016. Its totient is φ = 61581312.

The previous prime is 72127303. The next prime is 72127331. The reversal of 72127307 is 70372127.

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

It is not a de Polignac number, because 72127307 - 2² = 72127303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72127307.

It is not an unprimeable number, because it can be changed into a prime (72127301) 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, 18248 + ... + 21845.

It is an arithmetic number, because the mean of its divisors is an integer number (10344252).

Almost surely, 2^72127307 is an apocalyptic number.

72127307 is a deficient number, since it is larger than the sum of its proper divisors (10626709).

72127307 is a wasteful number, since it uses less digits than its factorization.

72127307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40357.

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 72127307 is about 8492.7796980729. The cubic root of 72127307 is about 416.2618139715.

The spelling of 72127307 in words is "seventy-two million, one hundred twenty-seven thousand, three hundred seven".