3522420 has 96 divisors (see below), whose sum is σ = 11975040. Its totient is φ = 852480.

The previous prime is 3522413. The next prime is 3522439. The reversal of 3522420 is 242253.

3522420 is nontrivially palindromic in base 14.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3522393 and 3522402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5644 + ... + 6236.

It is an arithmetic number, because the mean of its divisors is an integer number (124740).

Almost surely, 2^3522420 is an apocalyptic number.

3522420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3522420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5987520).

3522420 is an abundant number, since it is smaller than the sum of its proper divisors (8452620).

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

3522420 is a wasteful number, since it uses less digits than its factorization.

3522420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 614 counting only the distinct ones).

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

The square root of 3522420 is about 1876.8111252867. The cubic root of 3522420 is about 152.1529508422.

Adding to 3522420 its reverse (242253), we get a palindrome (3764673).

It can be divided in two parts, 352 and 2420, that added together give a palindrome (2772).

The spelling of 3522420 in words is "three million, five hundred twenty-two thousand, four hundred twenty".