2100744 has 48 divisors (see below), whose sum is σ = 5756400. Its totient is φ = 692064.

The previous prime is 2100743. The next prime is 2100781. The reversal of 2100744 is 4470012.

2100744 = T₇₂ + T₇₃ + ... + T₂₃₄.

It is a happy number.

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 (2100743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11647 + ... + 11825.

It is an arithmetic number, because the mean of its divisors is an integer number (119925).

2^2100744 is an apocalyptic number.

2100744 is a gapful number since it is divisible by the number (24) 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 2100744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2878200).

2100744 is an abundant number, since it is smaller than the sum of its proper divisors (3655656).

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

2100744 is a wasteful number, since it uses less digits than its factorization.

2100744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2100744 is about 1449.3943562744. The cubic root of 2100744 is about 128.0730377433.

Adding to 2100744 its reverse (4470012), we get a palindrome (6570756).

The spelling of 2100744 in words is "two million, one hundred thousand, seven hundred forty-four".