2861100 has 162 divisors, whose sum is σ = 10392564. Its totient is φ = 652800.

The previous prime is 2861081. The next prime is 2861107. The reversal of 2861100 is 11682.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2861107) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 168292 + ... + 168308.

2^2861100 is an apocalyptic number.

2861100 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 2861100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5196282).

2861100 is an abundant number, since it is smaller than the sum of its proper divisors (7531464).

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

2861100 is a wasteful number, since it uses less digits than its factorization.

2861100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 2861100 is about 1691.4786430813. The cubic root of 2861100 is about 141.9638207108.

Adding to 2861100 its reverse (11682), we get a palindrome (2872782).

The spelling of 2861100 in words is "two million, eight hundred sixty-one thousand, one hundred".