72838589 has 4 divisors (see below), whose sum is σ = 74212956. Its totient is φ = 71464224.

The previous prime is 72838573. The next prime is 72838637. The reversal of 72838589 is 98583827.

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

It can be written as a sum of positive squares in 2 ways, for example, as 66422500 + 6416089 = 8150^2 + 2533^2 .

It is a cyclic number.

It is not a de Polignac number, because 72838589 - 2⁴ = 72838573 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 (72838529) 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, 687104 + ... + 687209.

It is an arithmetic number, because the mean of its divisors is an integer number (18553239).

Almost surely, 2^72838589 is an apocalyptic number.

It is an amenable number.

72838589 is a deficient number, since it is larger than the sum of its proper divisors (1374367).

72838589 is a wasteful number, since it uses less digits than its factorization.

72838589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374366.

The product of its digits is 967680, while the sum is 50.

The square root of 72838589 is about 8534.5526537716. The cubic root of 72838589 is about 417.6256597618.

The spelling of 72838589 in words is "seventy-two million, eight hundred thirty-eight thousand, five hundred eighty-nine".