4078840 has 32 divisors (see below), whose sum is σ = 9272880. Its totient is φ = 1614592.

The previous prime is 4078831. The next prime is 4078871. The reversal of 4078840 is 488704.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3804 + ... + 4756.

Almost surely, 2^4078840 is an apocalyptic number.

4078840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4078840 is an abundant number, since it is smaller than the sum of its proper divisors (5194040).

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

4078840 is a wasteful number, since it uses less digits than its factorization.

4078840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 4078840 is about 2019.6138244724. The cubic root of 4078840 is about 159.7762497448.

The spelling of 4078840 in words is "four million, seventy-eight thousand, eight hundred forty".