8420378 has 8 divisors (see below), whose sum is σ = 12646368. Its totient is φ = 4204924.

The previous prime is 8420351. The next prime is 8420393. The reversal of 8420378 is 8730248.

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

It is a Curzon number.

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, 176 + ... + 4107.

It is an arithmetic number, because the mean of its divisors is an integer number (1580796).

Almost surely, 2^8420378 is an apocalyptic number.

8420378 is a deficient number, since it is larger than the sum of its proper divisors (4225990).

8420378 is a wasteful number, since it uses less digits than its factorization.

8420378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5268.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 8420378 is about 2901.7887586797. The cubic root of 8420378 is about 203.4435205584.

The spelling of 8420378 in words is "eight million, four hundred twenty thousand, three hundred seventy-eight".