90603520 has 128 divisors (see below), whose sum is σ = 251654400. Its totient is φ = 30670848.

The previous prime is 90603517. The next prime is 90603521. The reversal of 90603520 is 2530609.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (90603521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1146841 + ... + 1146919.

It is an arithmetic number, because the mean of its divisors is an integer number (1966050).

Almost surely, 2^90603520 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 90603520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125827200).

90603520 is an abundant number, since it is smaller than the sum of its proper divisors (161050880).

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

90603520 is an frugal number, since it uses more digits than its factorization.

90603520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 90603520 is about 9518.5881306000. The cubic root of 90603520 is about 449.1399540237.

The spelling of 90603520 in words is "ninety million, six hundred three thousand, five hundred twenty".