2800765 has 8 divisors (see below), whose sum is σ = 3666528. Its totient is φ = 2036880.

The previous prime is 2800729. The next prime is 2800769. The reversal of 2800765 is 5670082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2800765 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800769) 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, 25407 + ... + 25516.

It is an arithmetic number, because the mean of its divisors is an integer number (458316).

2^2800765 is an apocalyptic number.

It is an amenable number.

2800765 is a deficient number, since it is larger than the sum of its proper divisors (865763).

2800765 is a wasteful number, since it uses less digits than its factorization.

2800765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50939.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 2800765 is about 1673.5486249285. The cubic root of 2800765 is about 140.9588096237.

The spelling of 2800765 in words is "two million, eight hundred thousand, seven hundred sixty-five".