3428378 has 4 divisors (see below), whose sum is σ = 5142570. Its totient is φ = 1714188.

The previous prime is 3428371. The next prime is 3428389. The reversal of 3428378 is 8738243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8738243 = 179 ⋅48817.

It can be written as a sum of positive squares in only one way, i.e., 2550409 + 877969 = 1597^2 + 937^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3428371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 857093 + ... + 857096.

Almost surely, 2^3428378 is an apocalyptic number.

3428378 is a deficient number, since it is larger than the sum of its proper divisors (1714192).

3428378 is a wasteful number, since it uses less digits than its factorization.

3428378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714191.

The product of its digits is 32256, while the sum is 35.

The square root of 3428378 is about 1851.5879671244. The cubic root of 3428378 is about 150.7866524924.

The spelling of 3428378 in words is "three million, four hundred twenty-eight thousand, three hundred seventy-eight".