73828591 has 4 divisors (see below), whose sum is σ = 73988512. Its totient is φ = 73668672.

The previous prime is 73828589. The next prime is 73828607. The reversal of 73828591 is 19582837.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19582837 = 2213 ⋅8849.

It is a cyclic number.

It is not a de Polignac number, because 73828591 - 2¹ = 73828589 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73828561) 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, 79266 + ... + 80191.

It is an arithmetic number, because the mean of its divisors is an integer number (18497128).

Almost surely, 2^73828591 is an apocalyptic number.

73828591 is a deficient number, since it is larger than the sum of its proper divisors (159921).

73828591 is a wasteful number, since it uses less digits than its factorization.

73828591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159920.

The product of its digits is 120960, while the sum is 43.

The square root of 73828591 is about 8592.3565452092. The cubic root of 73828591 is about 419.5092359183.

The spelling of 73828591 in words is "seventy-three million, eight hundred twenty-eight thousand, five hundred ninety-one".