9072918 has 64 divisors (see below), whose sum is σ = 21888000. Its totient is φ = 2776032.

The previous prime is 9072901. The next prime is 9072919. The reversal of 9072918 is 8192709.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9072919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37843 + ... + 38081.

It is an arithmetic number, because the mean of its divisors is an integer number (342000).

Almost surely, 2^9072918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9072918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10944000).

9072918 is an abundant number, since it is smaller than the sum of its proper divisors (12815082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9072918 is a wasteful number, since it uses less digits than its factorization.

9072918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 9072918 is about 3012.1284833154. The cubic root of 9072918 is about 208.5686332717.

The spelling of 9072918 in words is "nine million, seventy-two thousand, nine hundred eighteen".