90740178 has 12 divisors (see below), whose sum is σ = 196603758. Its totient is φ = 30246720.

The previous prime is 90740161. The next prime is 90740179. The reversal of 90740178 is 87104709.

It can be written as a sum of positive squares in only one way, i.e., 79869969 + 10870209 = 8937^2 + 3297^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90740179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2520543 + ... + 2520578.

Almost surely, 2^90740178 is an apocalyptic number.

90740178 is an abundant number, since it is smaller than the sum of its proper divisors (105863580).

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

90740178 is a wasteful number, since it uses less digits than its factorization.

90740178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041129 (or 5041126 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 90740178 is about 9525.7639063752. The cubic root of 90740178 is about 449.3656543586.

The spelling of 90740178 in words is "ninety million, seven hundred forty thousand, one hundred seventy-eight".