10981990 has 16 divisors (see below), whose sum is σ = 19822320. Its totient is φ = 4380640.

The previous prime is 10981987. The next prime is 10982053. The reversal of 10981990 is 9918901.

10981990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2880 + ... + 5500.

It is an arithmetic number, because the mean of its divisors is an integer number (1238895).

Almost surely, 2^10981990 is an apocalyptic number.

10981990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10981990 is a deficient number, since it is larger than the sum of its proper divisors (8840330).

10981990 is a wasteful number, since it uses less digits than its factorization.

10981990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047.

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

The square root of 10981990 is about 3313.9085684430. The cubic root of 10981990 is about 222.2765673568.

The spelling of 10981990 in words is "ten million, nine hundred eighty-one thousand, nine hundred ninety".