3622520 has 32 divisors (see below), whose sum is σ = 8892720. Its totient is φ = 1317120.

The previous prime is 3622517. The next prime is 3622529. The reversal of 3622520 is 252263.

It is a happy number.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3622492 and 3622501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3622529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3677 + ... + 4556.

Almost surely, 2^3622520 is an apocalyptic number.

It is an amenable number.

3622520 is an abundant number, since it is smaller than the sum of its proper divisors (5270200).

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

3622520 is a wasteful number, since it uses less digits than its factorization.

3622520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8255 (or 8251 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3622520 is about 1903.2918851296. The cubic root of 3622520 is about 153.5808018179.

Adding to 3622520 its reverse (252263), we get a palindrome (3874783).

It can be divided in two parts, 362 and 2520, that added together give a palindrome (2882).

The spelling of 3622520 in words is "three million, six hundred twenty-two thousand, five hundred twenty".