90027818 has 16 divisors (see below), whose sum is σ = 143721864. Its totient is φ = 42147840.

The previous prime is 90027811. The next prime is 90027829. The reversal of 90027818 is 81872009.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 88604569 + 1423249 = 9413^2 + 1193^2 .

It is a super-2 number, since 2×90027818² = 16210016027682248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90027811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23 + ... + 13418.

Almost surely, 2^90027818 is an apocalyptic number.

90027818 is a deficient number, since it is larger than the sum of its proper divisors (53694046).

90027818 is a wasteful number, since it uses less digits than its factorization.

90027818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13657.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 90027818 is about 9488.2990045635. The cubic root of 90027818 is about 448.1866416466.

The spelling of 90027818 in words is "ninety million, twenty-seven thousand, eight hundred eighteen".