23456778 has 8 divisors (see below), whose sum is σ = 46913568. Its totient is φ = 7818924.

The previous prime is 23456761. The next prime is 23456789. The reversal of 23456778 is 87765432.

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

23456778 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, 1954726 + ... + 1954737.

It is an arithmetic number, because the mean of its divisors is an integer number (5864196).

Almost surely, 2^23456778 is an apocalyptic number.

23456778 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.

23456778 is a wasteful number, since it uses less digits than its factorization.

23456778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909468.

The product of its digits is 282240, while the sum is 42.

The square root of 23456778 is about 4843.2197967881. The cubic root of 23456778 is about 286.2570024284.

The spelling of 23456778 in words is "twenty-three million, four hundred fifty-six thousand, seven hundred seventy-eight".