10981900 has 18 divisors (see below), whose sum is σ = 23830940. Its totient is φ = 4392720.

The previous prime is 10981889. The next prime is 10981907. The reversal of 10981900 is 918901.

It is a super-2 number, since 2×10981900² = 241204255220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10981907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54810 + ... + 55009.

Almost surely, 2^10981900 is an apocalyptic number.

10981900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10981900 is an abundant number, since it is smaller than the sum of its proper divisors (12849040).

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

10981900 is a wasteful number, since it uses less digits than its factorization.

10981900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109833 (or 109826 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 10981900 is about 3313.8949892838. The cubic root of 10981900 is about 222.2759601522.

It can be divided in two parts, 10981 and 900, that added together give a square (11881 = 109²).

The spelling of 10981900 in words is "ten million, nine hundred eighty-one thousand, nine hundred".