11005890426 has 24 divisors (see below), whose sum is σ = 24490586484. Its totient is φ = 3569477760.

The previous prime is 11005890421. The next prime is 11005890439. The reversal of 11005890426 is 62409850011.

It can be written as a sum of positive squares in 2 ways, for example, as 9525564801 + 1480325625 = 97599^2 + 38475^2 .

It is a super-2 number, since 2×11005890426² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11005890421) 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 11 ways as a sum of consecutive naturals, for example, 8262015 + ... + 8263346.

Almost surely, 2^11005890426 is an apocalyptic number.

11005890426 is an abundant number, since it is smaller than the sum of its proper divisors (13484696058).

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

11005890426 is a wasteful number, since it uses less digits than its factorization.

11005890426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16525406 (or 16525403 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 11005890426 in words is "eleven billion, five million, eight hundred ninety thousand, four hundred twenty-six".