73288989 has 16 divisors (see below), whose sum is σ = 114963840. Its totient is φ = 45984960.

The previous prime is 73288987. The next prime is 73288997. The reversal of 73288989 is 98988237.

It is not a de Polignac number, because 73288989 - 2¹ = 73288987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73288987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79377 + ... + 80294.

It is an arithmetic number, because the mean of its divisors is an integer number (7185240).

Almost surely, 2^73288989 is an apocalyptic number.

It is an amenable number.

73288989 is a deficient number, since it is larger than the sum of its proper divisors (41674851).

73288989 is a wasteful number, since it uses less digits than its factorization.

73288989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159697 (or 159691 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 73288989 is about 8560.8988429954. The cubic root of 73288989 is about 418.4846925967.

The spelling of 73288989 in words is "seventy-three million, two hundred eighty-eight thousand, nine hundred eighty-nine".