2109072 has 40 divisors (see below), whose sum is σ = 6227776. Its totient is φ = 602496.

The previous prime is 2109067. The next prime is 2109097. The reversal of 2109072 is 2709012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2803 + ... + 3474.

2^2109072 is an apocalyptic number.

It is an amenable number.

2109072 is an abundant number, since it is smaller than the sum of its proper divisors (4118704).

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

2109072 is a wasteful number, since it uses less digits than its factorization.

2109072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6295 (or 6289 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 2109072 is about 1452.2644387301. The cubic root of 2109072 is about 128.2420549931.

The spelling of 2109072 in words is "two million, one hundred nine thousand, seventy-two".