72841279 has 4 divisors (see below), whose sum is σ = 83247184. Its totient is φ = 62435376.

The previous prime is 72841273. The next prime is 72841303. The reversal of 72841279 is 97214827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72841279 - 2⁷ = 72841151 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 (72841273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5202942 + ... + 5202955.

It is an arithmetic number, because the mean of its divisors is an integer number (20811796).

Almost surely, 2^72841279 is an apocalyptic number.

72841279 is a deficient number, since it is larger than the sum of its proper divisors (10405905).

72841279 is a wasteful number, since it uses less digits than its factorization.

72841279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10405904.

The product of its digits is 56448, while the sum is 40.

The square root of 72841279 is about 8534.7102469855. The cubic root of 72841279 is about 417.6308008059.

The spelling of 72841279 in words is "seventy-two million, eight hundred forty-one thousand, two hundred seventy-nine".