90575238 has 32 divisors (see below), whose sum is σ = 197568000. Its totient is φ = 27514656.

The previous prime is 90575231. The next prime is 90575249. The reversal of 90575238 is 83257509.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 90575196 and 90575205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90575231) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1188 + ... + 13511.

It is an arithmetic number, because the mean of its divisors is an integer number (6174000).

Almost surely, 2^90575238 is an apocalyptic number.

90575238 is an abundant number, since it is smaller than the sum of its proper divisors (106992762).

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

90575238 is a wasteful number, since it uses less digits than its factorization.

90575238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14796.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 90575238 is about 9517.1023951621. The cubic root of 90575238 is about 449.0932159642.

The spelling of 90575238 in words is "ninety million, five hundred seventy-five thousand, two hundred thirty-eight".