90818450 has 24 divisors (see below), whose sum is σ = 169373460. Its totient is φ = 36230400.

The previous prime is 90818411. The next prime is 90818477. The reversal of 90818450 is 5481809.

It can be written as a sum of positive squares in 6 ways, for example, as 49434961 + 41383489 = 7031^2 + 6433^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90818450.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18230 + ... + 22670.

Almost surely, 2^90818450 is an apocalyptic number.

90818450 is a deficient number, since it is larger than the sum of its proper divisors (78555010).

90818450 is a wasteful number, since it uses less digits than its factorization.

90818450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4862 (or 4857 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 90818450 is about 9529.8714576850. The cubic root of 90818450 is about 449.4948240415.

The spelling of 90818450 in words is "ninety million, eight hundred eighteen thousand, four hundred fifty".