1812672 has 56 divisors (see below), whose sum is σ = 5334000. Its totient is φ = 603648.

The previous prime is 1812661. The next prime is 1812673. The reversal of 1812672 is 2762181.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1812673) 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, 1204 + ... + 2252.

It is an arithmetic number, because the mean of its divisors is an integer number (95250).

2^1812672 is an apocalyptic number.

1812672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2667000).

1812672 is an abundant number, since it is smaller than the sum of its proper divisors (3521328).

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

1812672 is a wasteful number, since it uses less digits than its factorization.

1812672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070 (or 1054 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 1812672 is about 1346.3550794646. The cubic root of 1812672 is about 121.9288306580.

The spelling of 1812672 in words is "one million, eight hundred twelve thousand, six hundred seventy-two".