2456778 has 8 divisors (see below), whose sum is σ = 4913568. Its totient is φ = 818924.

The previous prime is 2456767. The next prime is 2456801. The reversal of 2456778 is 8776542.

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

2456778 is an admirable number.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204726 + ... + 204737.

It is an arithmetic number, because the mean of its divisors is an integer number (614196).

2^2456778 is an apocalyptic number.

2456778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2456778 is a wasteful number, since it uses less digits than its factorization.

2456778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409468.

The product of its digits is 94080, while the sum is 39.

The square root of 2456778 is about 1567.4112415062. The cubic root of 2456778 is about 134.9341791618.

The spelling of 2456778 in words is "two million, four hundred fifty-six thousand, seven hundred seventy-eight".