1820012 has 6 divisors (see below), whose sum is σ = 3185028. Its totient is φ = 910004.

The previous prime is 1820009. The next prime is 1820023. The reversal of 1820012 is 2100281.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227498 + ... + 227505.

It is an arithmetic number, because the mean of its divisors is an integer number (530838).

2^1820012 is an apocalyptic number.

It is an amenable number.

1820012 is a deficient number, since it is larger than the sum of its proper divisors (1365016).

1820012 is a wasteful number, since it uses less digits than its factorization.

1820012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455007 (or 455005 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1820012 is about 1349.0782038118. The cubic root of 1820012 is about 122.0931833102.

Adding to 1820012 its reverse (2100281), we get a palindrome (3920293).

The spelling of 1820012 in words is "one million, eight hundred twenty thousand, twelve".