4078040 has 32 divisors (see below), whose sum is σ = 9234000. Its totient is φ = 1620864.

The previous prime is 4078031. The next prime is 4078043. The reversal of 4078040 is 408704.

It is a junction number, because it is equal to n+sod(n) for n = 4077997 and 4078015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4078043) 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 7 ways as a sum of consecutive naturals, for example, 10571 + ... + 10949.

Almost surely, 2^4078040 is an apocalyptic number.

4078040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4078040 is an abundant number, since it is smaller than the sum of its proper divisors (5155960).

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

4078040 is a wasteful number, since it uses less digits than its factorization.

4078040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 4078040 is about 2019.4157570941. The cubic root of 4078040 is about 159.7658031997.

The spelling of 4078040 in words is "four million, seventy-eight thousand, forty".