72146427 has 8 divisors (see below), whose sum is σ = 96353616. Its totient is φ = 48018432.

The previous prime is 72146387. The next prime is 72146443. The reversal of 72146427 is 72464127.

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

It is not a de Polignac number, because 72146427 - 2¹² = 72142331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72146497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17638 + ... + 21339.

It is an arithmetic number, because the mean of its divisors is an integer number (12044202).

Almost surely, 2^72146427 is an apocalyptic number.

72146427 is a deficient number, since it is larger than the sum of its proper divisors (24207189).

72146427 is a wasteful number, since it uses less digits than its factorization.

72146427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39597.

The product of its digits is 18816, while the sum is 33.

The square root of 72146427 is about 8493.9052855562. The cubic root of 72146427 is about 416.2985925650.

The spelling of 72146427 in words is "seventy-two million, one hundred forty-six thousand, four hundred twenty-seven".