2256987 has 8 divisors (see below), whose sum is σ = 3073536. Its totient is φ = 1472552.

The previous prime is 2256973. The next prime is 2257001. The reversal of 2256987 is 7896522.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2256973) and next prime (2257001).

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

It is a cyclic number.

It is not a de Polignac number, because 2256987 - 2⁶ = 2256923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2256887) 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, 7863 + ... + 8144.

It is an arithmetic number, because the mean of its divisors is an integer number (384192).

2^2256987 is an apocalyptic number.

2256987 is a deficient number, since it is larger than the sum of its proper divisors (816549).

2256987 is a wasteful number, since it uses less digits than its factorization.

2256987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16057.

The product of its digits is 60480, while the sum is 39.

The square root of 2256987 is about 1502.3271947216. The cubic root of 2256987 is about 131.1725674787.

The spelling of 2256987 in words is "two million, two hundred fifty-six thousand, nine hundred eighty-seven".