3420278 has 4 divisors (see below), whose sum is σ = 5130420. Its totient is φ = 1710138.

The previous prime is 3420271. The next prime is 3420293. The reversal of 3420278 is 8720243.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 855068 + ... + 855071.

It is an arithmetic number, because the mean of its divisors is an integer number (1282605).

Almost surely, 2^3420278 is an apocalyptic number.

3420278 is a deficient number, since it is larger than the sum of its proper divisors (1710142).

3420278 is a wasteful number, since it uses less digits than its factorization.

3420278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710141.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 3420278 is about 1849.3993619551. The cubic root of 3420278 is about 150.6678076592.

The spelling of 3420278 in words is "three million, four hundred twenty thousand, two hundred seventy-eight".