72889415 has 16 divisors (see below), whose sum is σ = 96076800. Its totient is φ = 52839072.

The previous prime is 72889403. The next prime is 72889417. The reversal of 72889415 is 51498827.

It is a cyclic number.

It is not a de Polignac number, because 72889415 - 2⁶ = 72889351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72889417) 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 15 ways as a sum of consecutive naturals, for example, 14495 + ... + 18864.

It is an arithmetic number, because the mean of its divisors is an integer number (6004800).

Almost surely, 2^72889415 is an apocalyptic number.

72889415 is a deficient number, since it is larger than the sum of its proper divisors (23187385).

72889415 is a wasteful number, since it uses less digits than its factorization.

72889415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33406.

The product of its digits is 161280, while the sum is 44.

The square root of 72889415 is about 8537.5297949700. The cubic root of 72889415 is about 417.7227754383.

The spelling of 72889415 in words is "seventy-two million, eight hundred eighty-nine thousand, four hundred fifteen".