4253220 has 36 divisors (see below), whose sum is σ = 12901980. Its totient is φ = 1134144.

The previous prime is 4253209. The next prime is 4253233. The reversal of 4253220 is 223524.

It can be written as a sum of positive squares in 2 ways, for example, as 589824 + 3663396 = 768^2 + 1914^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 4253193 and 4253202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11635 + ... + 11994.

Almost surely, 2^4253220 is an apocalyptic number.

It is an amenable number.

4253220 is an abundant number, since it is smaller than the sum of its proper divisors (8648760).

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

4253220 is a wasteful number, since it uses less digits than its factorization.

4253220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23644 (or 23639 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 4253220 is about 2062.3336296536. Note that the first 3 decimals coincide. The cubic root of 4253220 is about 162.0214877762.

Adding to 4253220 its reverse (223524), we get a palindrome (4476744).

The spelling of 4253220 in words is "four million, two hundred fifty-three thousand, two hundred twenty".