4231620 has 36 divisors (see below), whose sum is σ = 12836460. Its totient is φ = 1128384.

The previous prime is 4231607. The next prime is 4231627. The reversal of 4231620 is 261324.

It is a happy number.

4231620 is a `hidden beast` number, since 42 + 3 + 1 + 620 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3154176 + 1077444 = 1776^2 + 1038^2 .

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 = 4231593 and 4231602.

It is not an unprimeable number, because it can be changed into a prime (4231627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11575 + ... + 11934.

Almost surely, 2^4231620 is an apocalyptic number.

It is an amenable number.

4231620 is an abundant number, since it is smaller than the sum of its proper divisors (8604840).

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

4231620 is a wasteful number, since it uses less digits than its factorization.

4231620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23524 (or 23519 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 4231620 is about 2057.0901778969. The cubic root of 4231620 is about 161.7467465008.

Adding to 4231620 its reverse (261324), we get a palindrome (4492944).

It can be divided in two parts, 4231 and 620, that added together give a triangular number (4851 = T₉₈).

The spelling of 4231620 in words is "four million, two hundred thirty-one thousand, six hundred twenty".