4180520 has 16 divisors (see below), whose sum is σ = 9406260. Its totient is φ = 1672192.

The previous prime is 4180507. The next prime is 4180541. The reversal of 4180520 is 250814.

It can be written as a sum of positive squares in 2 ways, for example, as 3818116 + 362404 = 1954^2 + 602^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4180492 and 4180501.

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, 52217 + ... + 52296.

Almost surely, 2^4180520 is an apocalyptic number.

4180520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4180520 is an abundant number, since it is smaller than the sum of its proper divisors (5225740).

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

4180520 is a wasteful number, since it uses less digits than its factorization.

4180520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104524 (or 104520 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 4180520 is about 2044.6319962282. The cubic root of 4180520 is about 161.0930367710.

The spelling of 4180520 in words is "four million, one hundred eighty thousand, five hundred twenty".