4078720 has 32 divisors (see below), whose sum is σ = 9752220. Its totient is φ = 1631232.

The previous prime is 4078717. The next prime is 4078741. The reversal of 4078720 is 278704.

It can be written as a sum of positive squares in 2 ways, for example, as 4032064 + 46656 = 2008^2 + 216^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 2547 + ... + 3826.

Almost surely, 2^4078720 is an apocalyptic number.

4078720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4078720 is an abundant number, since it is smaller than the sum of its proper divisors (5673500).

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

4078720 is an equidigital number, since it uses as much as digits as its factorization.

4078720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6392 (or 6380 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 4078720 is about 2019.5841156040. The cubic root of 4078720 is about 159.7746828501.

The spelling of 4078720 in words is "four million, seventy-eight thousand, seven hundred twenty".