3845478 has 32 divisors (see below), whose sum is σ = 9467136. Its totient is φ = 1014048.

The previous prime is 3845477. The next prime is 3845489. The reversal of 3845478 is 8745483.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3845477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2976 + ... + 4067.

It is an arithmetic number, because the mean of its divisors is an integer number (295848).

Almost surely, 2^3845478 is an apocalyptic number.

3845478 is an abundant number, since it is smaller than the sum of its proper divisors (5621658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3845478 is a wasteful number, since it uses less digits than its factorization.

3845478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068.

The product of its digits is 107520, while the sum is 39.

The square root of 3845478 is about 1960.9890361754. The cubic root of 3845478 is about 156.6691343105.

The spelling of 3845478 in words is "three million, eight hundred forty-five thousand, four hundred seventy-eight".