9072920 has 16 divisors (see below), whose sum is σ = 20414160. Its totient is φ = 3629152.

The previous prime is 9072919. The next prime is 9072923. The reversal of 9072920 is 292709.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9072923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113372 + ... + 113451.

It is an arithmetic number, because the mean of its divisors is an integer number (1275885).

Almost surely, 2^9072920 is an apocalyptic number.

It is an amenable number.

9072920 is an abundant number, since it is smaller than the sum of its proper divisors (11341240).

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

9072920 is a wasteful number, since it uses less digits than its factorization.

9072920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226834 (or 226830 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 9072920 is about 3012.1288153065. The cubic root of 9072920 is about 208.5686485971.

The spelling of 9072920 in words is "nine million, seventy-two thousand, nine hundred twenty".