3520422 has 40 divisors (see below), whose sum is σ = 8154432. Its totient is φ = 1134000.

The previous prime is 3520399. The next prime is 3520427. The reversal of 3520422 is 2240253.

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

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 3520395 and 3520404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520427) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4672 + ... + 5372.

Almost surely, 2^3520422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3520422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4077216).

3520422 is an abundant number, since it is smaller than the sum of its proper divisors (4634010).

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

3520422 is a wasteful number, since it uses less digits than its factorization.

3520422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 737 counting only the distinct ones).

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

The square root of 3520422 is about 1876.2787639367. The cubic root of 3520422 is about 152.1241771494.

Adding to 3520422 its reverse (2240253), we get a palindrome (5760675).

The spelling of 3520422 in words is "three million, five hundred twenty thousand, four hundred twenty-two".