72887889 has 8 divisors (see below), whose sum is σ = 97543552. Its totient is φ = 48412080.

The previous prime is 72887887. The next prime is 72887909. The reversal of 72887889 is 98878827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72887889 - 2¹ = 72887887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72887887) by changing a digit.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44014 + ... + 45639.

It is an arithmetic number, because the mean of its divisors is an integer number (12192944).

Almost surely, 2^72887889 is an apocalyptic number.

It is an amenable number.

72887889 is a deficient number, since it is larger than the sum of its proper divisors (24655663).

72887889 is a wasteful number, since it uses less digits than its factorization.

72887889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89927.

The product of its digits is 3612672, while the sum is 57.

The square root of 72887889 is about 8537.4404243895. The cubic root of 72887889 is about 417.7198602944.

The spelling of 72887889 in words is "seventy-two million, eight hundred eighty-seven thousand, eight hundred eighty-nine".