72842963 has 4 divisors (see below), whose sum is σ = 75192768. Its totient is φ = 70493160.

The previous prime is 72842923. The next prime is 72842969. The reversal of 72842963 is 36924827.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36924827 = 487 ⋅75821.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72842963 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 72842963.

It is not an unprimeable number, because it can be changed into a prime (72842969) 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 3 ways as a sum of consecutive naturals, for example, 1174856 + ... + 1174917.

It is an arithmetic number, because the mean of its divisors is an integer number (18798192).

Almost surely, 2^72842963 is an apocalyptic number.

72842963 is a deficient number, since it is larger than the sum of its proper divisors (2349805).

72842963 is a wasteful number, since it uses less digits than its factorization.

72842963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2349804.

The product of its digits is 145152, while the sum is 41.

The square root of 72842963 is about 8534.8089023715. The cubic root of 72842963 is about 417.6340191498.

The spelling of 72842963 in words is "seventy-two million, eight hundred forty-two thousand, nine hundred sixty-three".