3520722 has 8 divisors (see below), whose sum is σ = 7041456. Its totient is φ = 1173572.

The previous prime is 3520697. The next prime is 3520729. The reversal of 3520722 is 2270253.

It is a sphenic number, since it is the product of 3 distinct primes.

3520722 is an admirable number.

It is a super-3 number, since 3×3520722³ (a number of 21 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3520729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293388 + ... + 293399.

It is an arithmetic number, because the mean of its divisors is an integer number (880182).

Almost surely, 2^3520722 is an apocalyptic number.

3520722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3520722 is a wasteful number, since it uses less digits than its factorization.

3520722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586792.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 3520722 is about 1876.3587077102. The cubic root of 3520722 is about 152.1284982182.

Adding to 3520722 its reverse (2270253), we get a palindrome (5790975).

The spelling of 3520722 in words is "three million, five hundred twenty thousand, seven hundred twenty-two".