4087220 has 12 divisors (see below), whose sum is σ = 8583204. Its totient is φ = 1634880.

The previous prime is 4087217. The next prime is 4087229. The reversal of 4087220 is 227804.

It can be written as a sum of positive squares in 2 ways, for example, as 2579236 + 1507984 = 1606^2 + 1228^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4087229) 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, 102161 + ... + 102200.

It is an arithmetic number, because the mean of its divisors is an integer number (715267).

Almost surely, 2^4087220 is an apocalyptic number.

It is an amenable number.

4087220 is an abundant number, since it is smaller than the sum of its proper divisors (4495984).

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

4087220 is a wasteful number, since it uses less digits than its factorization.

4087220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204370 (or 204368 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 4087220 is about 2021.6874140183. The cubic root of 4087220 is about 159.8855953001.

The spelling of 4087220 in words is "four million, eighty-seven thousand, two hundred twenty".