2820788 has 6 divisors (see below), whose sum is σ = 4936386. Its totient is φ = 1410392.

The previous prime is 2820787. The next prime is 2820791. The reversal of 2820788 is 8870282.

It can be written as a sum of positive squares in only one way, i.e., 2748964 + 71824 = 1658^2 + 268^2 .

It is a super-3 number, since 3×2820788³ = 67333718181826631616, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352595 + ... + 352602.

It is an arithmetic number, because the mean of its divisors is an integer number (822731).

2^2820788 is an apocalyptic number.

It is an amenable number.

2820788 is a deficient number, since it is larger than the sum of its proper divisors (2115598).

2820788 is a wasteful number, since it uses less digits than its factorization.

2820788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705201 (or 705199 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 2820788 is about 1679.5201695723. The cubic root of 2820788 is about 141.2939226968.

The spelling of 2820788 in words is "two million, eight hundred twenty thousand, seven hundred eighty-eight".