90490560 has 56 divisors (see below), whose sum is σ = 287310576. Its totient is φ = 24130560.

The previous prime is 90490553. The next prime is 90490573. The reversal of 90490560 is 6509409.

It is a happy number.

It is a super-2 number, since 2×90490560² = 16377082898227200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46171 + ... + 48090.

It is an arithmetic number, because the mean of its divisors is an integer number (5130546).

Almost surely, 2^90490560 is an apocalyptic number.

It is an amenable number.

90490560 is an abundant number, since it is smaller than the sum of its proper divisors (196820016).

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

90490560 is a wasteful number, since it uses less digits than its factorization.

90490560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94281 (or 94271 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 90490560 is about 9512.6526268965. The cubic root of 90490560 is about 448.9532212184.

Adding to 90490560 its reverse (6509409), we get a palindrome (96999969).

The spelling of 90490560 in words is "ninety million, four hundred ninety thousand, five hundred sixty".