3402478 has 4 divisors (see below), whose sum is σ = 5103720. Its totient is φ = 1701238.

The previous prime is 3402473. The next prime is 3402517. The reversal of 3402478 is 8742043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8742043 = 859 ⋅10177.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3402473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 850618 + ... + 850621.

It is an arithmetic number, because the mean of its divisors is an integer number (1275930).

Almost surely, 2^3402478 is an apocalyptic number.

3402478 is a deficient number, since it is larger than the sum of its proper divisors (1701242).

3402478 is a wasteful number, since it uses less digits than its factorization.

3402478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701241.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 3402478 is about 1844.5807111645. The cubic root of 3402478 is about 150.4059816826.

The spelling of 3402478 in words is "three million, four hundred two thousand, four hundred seventy-eight".