90075290 has 8 divisors (see below), whose sum is σ = 162135540. Its totient is φ = 36030112.

The previous prime is 90075289. The next prime is 90075317. The reversal of 90075290 is 9257009.

It can be written as a sum of positive squares in 2 ways, for example, as 89737729 + 337561 = 9473^2 + 581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×90075290² = 16227115737168200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4503755 + ... + 4503774.

Almost surely, 2^90075290 is an apocalyptic number.

90075290 is a deficient number, since it is larger than the sum of its proper divisors (72060250).

90075290 is a wasteful number, since it uses less digits than its factorization.

90075290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9007536.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 90075290 is about 9490.8002823787. The cubic root of 90075290 is about 448.2654046265.

The spelling of 90075290 in words is "ninety million, seventy-five thousand, two hundred ninety".