1812772 has 24 divisors (see below), whose sum is σ = 3471552. Its totient is φ = 823200.

The previous prime is 1812763. The next prime is 1812773. The reversal of 1812772 is 2772181.

It is a super-2 number, since 2×1812772² = 6572284647968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1812772.

It is not an unprimeable number, because it can be changed into a prime (1812773) 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, 3447 + ... + 3937.

It is an arithmetic number, because the mean of its divisors is an integer number (144648).

2^1812772 is an apocalyptic number.

It is an amenable number.

1812772 is a deficient number, since it is larger than the sum of its proper divisors (1658780).

1812772 is a wasteful number, since it uses less digits than its factorization.

1812772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 577 counting only the distinct ones).

The product of its digits is 1568, while the sum is 28.

The square root of 1812772 is about 1346.3922162580. The cubic root of 1812772 is about 121.9310727733.

The spelling of 1812772 in words is "one million, eight hundred twelve thousand, seven hundred seventy-two".