2789257 has 8 divisors (see below), whose sum is σ = 2977760. Its totient is φ = 2604960.

The previous prime is 2789251. The next prime is 2789263. The reversal of 2789257 is 7529872.

2789257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2789251) and next prime (2789263).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2789257 is a prime.

It is a super-2 number, since 2×2789257² = 15559909224098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2789251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382 + ... + 2392.

It is an arithmetic number, because the mean of its divisors is an integer number (372220).

2^2789257 is an apocalyptic number.

It is an amenable number.

2789257 is a deficient number, since it is larger than the sum of its proper divisors (188503).

2789257 is a wasteful number, since it uses less digits than its factorization.

2789257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103.

The product of its digits is 70560, while the sum is 40.

The square root of 2789257 is about 1670.1068828072. The cubic root of 2789257 is about 140.7654837752.

The spelling of 2789257 in words is "two million, seven hundred eighty-nine thousand, two hundred fifty-seven".