1820712 has 32 divisors (see below), whose sum is σ = 4600800. Its totient is φ = 600384.

The previous prime is 1820711. The next prime is 1820737. The reversal of 1820712 is 2170281.

It is not an unprimeable number, because it can be changed into a prime (1820711) 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, 2214 + ... + 2922.

It is an arithmetic number, because the mean of its divisors is an integer number (143775).

2^1820712 is an apocalyptic number.

1820712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1820712 is an abundant number, since it is smaller than the sum of its proper divisors (2780088).

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

1820712 is a wasteful number, since it uses less digits than its factorization.

1820712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1820712 is about 1349.3376152765. The cubic root of 1820712 is about 122.1088341728.

Adding to 1820712 its reverse (2170281), we get a palindrome (3990993).

It can be divided in two parts, 18 and 20712, that multiplied together give a triangular number (372816 = T₈₆₃).

The spelling of 1820712 in words is "one million, eight hundred twenty thousand, seven hundred twelve".