9090432 has 96 divisors (see below), whose sum is σ = 28217280. Its totient is φ = 2792448.

The previous prime is 9090407. The next prime is 9090437. The reversal of 9090432 is 2340909.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 9090396 and 9090405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14673 + ... + 15279.

It is an arithmetic number, because the mean of its divisors is an integer number (293930).

Almost surely, 2^9090432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9090432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14108640).

9090432 is an abundant number, since it is smaller than the sum of its proper divisors (19126848).

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

9090432 is a wasteful number, since it uses less digits than its factorization.

9090432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 9090432 is about 3015.0343281628. The cubic root of 9090432 is about 208.7027512078.

The spelling of 9090432 in words is "nine million, ninety thousand, four hundred thirty-two".