72146983 has 4 divisors (see below), whose sum is σ = 74634840. Its totient is φ = 69659128.

The previous prime is 72146953. The next prime is 72146989. The reversal of 72146983 is 38964127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38964127 = 6091 ⋅6397.

It is a cyclic number.

It is not a de Polignac number, because 72146983 - 2¹³ = 72138791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72146989) by changing a digit.

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

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243885 + ... + 1243942.

It is an arithmetic number, because the mean of its divisors is an integer number (18658710).

Almost surely, 2^72146983 is an apocalyptic number.

72146983 is a deficient number, since it is larger than the sum of its proper divisors (2487857).

72146983 is a wasteful number, since it uses less digits than its factorization.

72146983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487856.

The product of its digits is 72576, while the sum is 40.

The square root of 72146983 is about 8493.9380148433. The cubic root of 72146983 is about 416.2996619708.

The spelling of 72146983 in words is "seventy-two million, one hundred forty-six thousand, nine hundred eighty-three".