2782015 has 4 divisors (see below), whose sum is σ = 3338424. Its totient is φ = 2225608.

The previous prime is 2782009. The next prime is 2782019. The reversal of 2782015 is 5102872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2782015 - 2⁵ = 2781983 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 (2782019) 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, 278197 + ... + 278206.

It is an arithmetic number, because the mean of its divisors is an integer number (834606).

2^2782015 is an apocalyptic number.

2782015 is a deficient number, since it is larger than the sum of its proper divisors (556409).

2782015 is an equidigital number, since it uses as much as digits as its factorization.

2782015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556408.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2782015 is about 1667.9373489433. The cubic root of 2782015 is about 140.6435508038.

Adding to 2782015 its reverse (5102872), we get a palindrome (7884887).

The spelling of 2782015 in words is "two million, seven hundred eighty-two thousand, fifteen".