4078520 has 16 divisors (see below), whose sum is σ = 9176760. Its totient is φ = 1631392.

The previous prime is 4078513. The next prime is 4078523. The reversal of 4078520 is 258704.

It is a self number, because there is not a number n which added to its sum of digits gives 4078520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4078523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50942 + ... + 51021.

Almost surely, 2^4078520 is an apocalyptic number.

4078520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4078520 is an abundant number, since it is smaller than the sum of its proper divisors (5098240).

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

4078520 is a wasteful number, since it uses less digits than its factorization.

4078520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101974 (or 101970 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 4078520 is about 2019.5345998522. The cubic root of 4078520 is about 159.7720712907.

The spelling of 4078520 in words is "four million, seventy-eight thousand, five hundred twenty".