11998090 has 64 divisors (see below), whose sum is σ = 25310880. Its totient is φ = 4055040.

The previous prime is 11998067. The next prime is 11998121. The reversal of 11998090 is 9089911.

11998090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 444889 + 11553201 = 667^2 + 3399^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134766 + ... + 134854.

Almost surely, 2^11998090 is an apocalyptic number.

11998090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11998090 is an abundant number, since it is smaller than the sum of its proper divisors (13312790).

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

11998090 is a wasteful number, since it uses less digits than its factorization.

11998090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 11998090 is about 3463.8259194134. The cubic root of 11998090 is about 228.9307011761.

The spelling of 11998090 in words is "eleven million, nine hundred ninety-eight thousand, ninety".