3778378 has 8 divisors (see below), whose sum is σ = 5965920. Its totient is φ = 1789740.

The previous prime is 3778343. The next prime is 3778391. The reversal of 3778378 is 8738773.

It is a happy number.

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

It is a super-2 number, since 2×3778378² = 28552280621768, which contains 22 as substring.

It is an Ulam 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, 49678 + ... + 49753.

It is an arithmetic number, because the mean of its divisors is an integer number (745740).

Almost surely, 2^3778378 is an apocalyptic number.

3778378 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3778378 is a deficient number, since it is larger than the sum of its proper divisors (2187542).

3778378 is a wasteful number, since it uses less digits than its factorization.

3778378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99452.

The product of its digits is 197568, while the sum is 43.

The square root of 3778378 is about 1943.8050313753. The cubic root of 3778378 is about 155.7525388482.

The spelling of 3778378 in words is "three million, seven hundred seventy-eight thousand, three hundred seventy-eight".