4378840 has 16 divisors (see below), whose sum is σ = 9852480. Its totient is φ = 1751520.

The previous prime is 4378837. The next prime is 4378897. The reversal of 4378840 is 488734.

It is a junction number, because it is equal to n+sod(n) for n = 4378796 and 4378805.

It is a congruent 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, 54696 + ... + 54775.

It is an arithmetic number, because the mean of its divisors is an integer number (615780).

Almost surely, 2^4378840 is an apocalyptic number.

4378840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4378840 is an abundant number, since it is smaller than the sum of its proper divisors (5473640).

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

4378840 is a wasteful number, since it uses less digits than its factorization.

4378840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109482 (or 109478 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 4378840 is about 2092.5678005742. The cubic root of 4378840 is about 163.6011525436.

The spelling of 4378840 in words is "four million, three hundred seventy-eight thousand, eight hundred forty".