72289885 has 8 divisors (see below), whose sum is σ = 86862816. Its totient is φ = 57755280.

The previous prime is 72289873. The next prime is 72289909. The reversal of 72289885 is 58898227.

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

It is not a de Polignac number, because 72289885 - 2⁵ = 72289853 is a prime.

It is a super-3 number, since 3×72289885³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5251 + ... + 13120.

It is an arithmetic number, because the mean of its divisors is an integer number (10857852).

Almost surely, 2^72289885 is an apocalyptic number.

It is an amenable number.

72289885 is a deficient number, since it is larger than the sum of its proper divisors (14572931).

72289885 is a wasteful number, since it uses less digits than its factorization.

72289885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19163.

The product of its digits is 645120, while the sum is 49.

The square root of 72289885 is about 8502.3458527632. The cubic root of 72289885 is about 416.5743365196.

The spelling of 72289885 in words is "seventy-two million, two hundred eighty-nine thousand, eight hundred eighty-five".