1999272 has 32 divisors (see below), whose sum is σ = 5453280. Its totient is φ = 605760.

The previous prime is 1999247. The next prime is 1999273. The reversal of 1999272 is 2729991.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1999272.

It is not an unprimeable number, because it can be changed into a prime (1999273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3523 + ... + 4050.

It is an arithmetic number, because the mean of its divisors is an integer number (170415).

2^1999272 is an apocalyptic number.

1999272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1999272 is an abundant number, since it is smaller than the sum of its proper divisors (3454008).

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

1999272 is a wasteful number, since it uses less digits than its factorization.

1999272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7593 (or 7589 counting only the distinct ones).

The product of its digits is 20412, while the sum is 39.

The square root of 1999272 is about 1413.9561520783. The cubic root of 1999272 is about 125.9768160922.

The spelling of 1999272 in words is "one million, nine hundred ninety-nine thousand, two hundred seventy-two".