90093428 has 24 divisors (see below), whose sum is σ = 164390688. Its totient is φ = 43164576.

The previous prime is 90093403. The next prime is 90093439. The reversal of 90093428 is 82439009.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4175 + ... + 14057.

It is an arithmetic number, because the mean of its divisors is an integer number (6849612).

Almost surely, 2^90093428 is an apocalyptic number.

It is an amenable number.

90093428 is a deficient number, since it is larger than the sum of its proper divisors (74297260).

90093428 is a wasteful number, since it uses less digits than its factorization.

90093428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9983 (or 9981 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 90093428 is about 9491.7557912117. The cubic root of 90093428 is about 448.2954909103.

The spelling of 90093428 in words is "ninety million, ninety-three thousand, four hundred twenty-eight".