2812788 has 36 divisors (see below), whose sum is σ = 7757568. Its totient is φ = 852240.

The previous prime is 2812753. The next prime is 2812801. The reversal of 2812788 is 8872182.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3156 + ... + 3947.

It is an arithmetic number, because the mean of its divisors is an integer number (215488).

2^2812788 is an apocalyptic number.

It is an amenable number.

2812788 is an abundant number, since it is smaller than the sum of its proper divisors (4944780).

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

2812788 is a wasteful number, since it uses less digits than its factorization.

2812788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7124 (or 7119 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 2812788 is about 1677.1368459371. The cubic root of 2812788 is about 141.1602222722.

It can be divided in two parts, 2812 and 788, that added together give a square (3600 = 60²).

The spelling of 2812788 in words is "two million, eight hundred twelve thousand, seven hundred eighty-eight".