1972812 has 24 divisors (see below), whose sum is σ = 4762800. Its totient is φ = 634816.

The previous prime is 1972807. The next prime is 1972813. The reversal of 1972812 is 2182791.

It is a self number, because there is not a number n which added to its sum of digits gives 1972812.

It is not an unprimeable number, because it can be changed into a prime (1972813) 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, 2487 + ... + 3182.

It is an arithmetic number, because the mean of its divisors is an integer number (198450).

2^1972812 is an apocalyptic number.

1972812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1972812 is an abundant number, since it is smaller than the sum of its proper divisors (2789988).

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

1972812 is a wasteful number, since it uses less digits than its factorization.

1972812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5705 (or 5703 counting only the distinct ones).

The product of its digits is 2016, while the sum is 30.

The square root of 1972812 is about 1404.5682610681. The cubic root of 1972812 is about 125.4185860544.

The spelling of 1972812 in words is "one million, nine hundred seventy-two thousand, eight hundred twelve".