2880001 has 4 divisors (see below), whose sum is σ = 3031600. Its totient is φ = 2728404.

The previous prime is 2879999. The next prime is 2880029. The reversal of 2880001 is 1000882.

2880001 = 99² + 100² + ... + 212².

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2880001 - 2¹ = 2879999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 151579 = 2880001 / (2 + 8 + 8 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2880041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75771 + ... + 75808.

It is an arithmetic number, because the mean of its divisors is an integer number (757900).

2^2880001 is an apocalyptic number.

It is an amenable number.

2880001 is a deficient number, since it is larger than the sum of its proper divisors (151599).

2880001 is a wasteful number, since it uses less digits than its factorization.

2880001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151598.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 2880001 is about 1697.0565694755. The cubic root of 2880001 is about 142.2757486467.

Adding to 2880001 its reverse (1000882), we get a palindrome (3880883).

The spelling of 2880001 in words is "two million, eight hundred eighty thousand, one".