4055720 has 32 divisors (see below), whose sum is σ = 9351720. Its totient is φ = 1582080.

The previous prime is 4055687. The next prime is 4055747. The reversal of 4055720 is 275504.

It can be written as a sum of positive squares in 4 ways, for example, as 2696164 + 1359556 = 1642^2 + 1166^2 .

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, 404 + ... + 2876.

Almost surely, 2^4055720 is an apocalyptic number.

4055720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4055720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4675860).

4055720 is an abundant number, since it is smaller than the sum of its proper divisors (5296000).

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

4055720 is a wasteful number, since it uses less digits than its factorization.

4055720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525 (or 2521 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 4055720 is about 2013.8818237424. The cubic root of 4055720 is about 159.4737921386.

The spelling of 4055720 in words is "four million, fifty-five thousand, seven hundred twenty".