23454778 has 8 divisors (see below), whose sum is σ = 37033920. Its totient is φ = 11110140.

The previous prime is 23454773. The next prime is 23454787. The reversal of 23454778 is 87745432.

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

It is a super-2 number, since 2×23454778² = 1100253222058568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23454778.

It is not an unprimeable number, because it can be changed into a prime (23454773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308578 + ... + 308653.

It is an arithmetic number, because the mean of its divisors is an integer number (4629240).

Almost surely, 2^23454778 is an apocalyptic number.

23454778 is a deficient number, since it is larger than the sum of its proper divisors (13579142).

23454778 is a wasteful number, since it uses less digits than its factorization.

23454778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617252.

The product of its digits is 188160, while the sum is 40.

The square root of 23454778 is about 4843.0133181729. The cubic root of 23454778 is about 286.2488664677.

The spelling of 23454778 in words is "twenty-three million, four hundred fifty-four thousand, seven hundred seventy-eight".