90391048 has 32 divisors (see below), whose sum is σ = 186325920. Its totient is φ = 40768000.

The previous prime is 90390997. The next prime is 90391051. The reversal of 90391048 is 84019309.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7608 + ... + 15448.

It is an arithmetic number, because the mean of its divisors is an integer number (5822685).

Almost surely, 2^90391048 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 90391048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93162960).

90391048 is an abundant number, since it is smaller than the sum of its proper divisors (95934872).

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

90391048 is a wasteful number, since it uses less digits than its factorization.

90391048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7989 (or 7985 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 90391048 is about 9507.4206807104. The cubic root of 90391048 is about 448.7885903452.

The spelling of 90391048 in words is "ninety million, three hundred ninety-one thousand, forty-eight".