2077812 has 90 divisors (see below), whose sum is σ = 6083154. Its totient is φ = 617760.

The previous prime is 2077811. The next prime is 2077813. The reversal of 2077812 is 2187702.

It is an interprime number because it is at equal distance from previous prime (2077811) and next prime (2077813).

It can be written as a sum of positive squares in only one way, i.e., 1920996 + 156816 = 1386^2 + 396^2 .

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

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2077811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 39178 + ... + 39230.

2^2077812 is an apocalyptic number.

2077812 is a gapful number since it is divisible by the number (22) 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 2077812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3041577).

2077812 is an abundant number, since it is smaller than the sum of its proper divisors (4005342).

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

2077812 is a wasteful number, since it uses less digits than its factorization.

2077812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 2077812 is about 1441.4617580775. The cubic root of 2077812 is about 127.6053109165.

The spelling of 2077812 in words is "two million, seventy-seven thousand, eight hundred twelve".