2981100 has 72 divisors (see below), whose sum is σ = 9096640. Its totient is φ = 751680.

The previous prime is 2981089. The next prime is 2981123. The reversal of 2981100 is 11892.

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5439 + ... + 5961.

2^2981100 is an apocalyptic number.

2981100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2981100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4548320).

2981100 is an abundant number, since it is smaller than the sum of its proper divisors (6115540).

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

2981100 is a wasteful number, since it uses less digits than its factorization.

2981100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 552 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 2981100 is about 1726.5862272125. The cubic root of 2981100 is about 143.9214463534.

Adding to 2981100 its reverse (11892), we get a palindrome (2992992).

It can be divided in two parts, 2981 and 100, that added together give a triangular number (3081 = T₇₈).

The spelling of 2981100 in words is "two million, nine hundred eighty-one thousand, one hundred".