2099040 has 48 divisors (see below), whose sum is σ = 6613488. Its totient is φ = 559616.

The previous prime is 2099033. The next prime is 2099059. The reversal of 2099040 is 409902.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2099040.

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, 1707 + ... + 2666.

It is an arithmetic number, because the mean of its divisors is an integer number (137781).

2^2099040 is an apocalyptic number.

2099040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2099040 is an abundant number, since it is smaller than the sum of its proper divisors (4514448).

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

2099040 is a wasteful number, since it uses less digits than its factorization.

2099040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391 (or 4383 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 2099040 is about 1448.8064052868. The cubic root of 2099040 is about 128.0383999372.

The spelling of 2099040 in words is "two million, ninety-nine thousand, forty".