1820612 has 12 divisors (see below), whose sum is σ = 3204096. Its totient is φ = 905160.

The previous prime is 1820597. The next prime is 1820617. The reversal of 1820612 is 2160281.

It is not an unprimeable number, because it can be changed into a prime (1820617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428 + ... + 1955.

It is an arithmetic number, because the mean of its divisors is an integer number (267008).

2^1820612 is an apocalyptic number.

It is an amenable number.

1820612 is a deficient number, since it is larger than the sum of its proper divisors (1383484).

1820612 is a wasteful number, since it uses less digits than its factorization.

1820612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578 (or 2576 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1820612 is about 1349.3005595493. The cubic root of 1820612 is about 122.1065985809.

Adding to 1820612 its reverse (2160281), we get a palindrome (3980893).

The spelling of 1820612 in words is "one million, eight hundred twenty thousand, six hundred twelve".