2109272 has 24 divisors (see below), whose sum is σ = 4349100. Its totient is φ = 958320.

The previous prime is 2109269. The next prime is 2109277. The reversal of 2109272 is 2729012.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122 + ... + 2057.

2^2109272 is an apocalyptic number.

2109272 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2109272 is an abundant number, since it is smaller than the sum of its proper divisors (2239828).

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

2109272 is a wasteful number, since it uses less digits than its factorization.

2109272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207 (or 2192 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2109272 is about 1452.3332950807. Note that the first 3 decimals coincide. The cubic root of 2109272 is about 128.2461085295.

The spelling of 2109272 in words is "two million, one hundred nine thousand, two hundred seventy-two".