3720522 has 16 divisors (see below), whose sum is σ = 8013600. Its totient is φ = 1144752.

The previous prime is 3720511. The next prime is 3720551. The reversal of 3720522 is 2250273.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23772 + ... + 23927.

It is an arithmetic number, because the mean of its divisors is an integer number (500850).

Almost surely, 2^3720522 is an apocalyptic number.

3720522 is an abundant number, since it is smaller than the sum of its proper divisors (4293078).

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

3720522 is a wasteful number, since it uses less digits than its factorization.

3720522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47717.

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

The square root of 3720522 is about 1928.8654696479. The cubic root of 3720522 is about 154.9534650453.

Adding to 3720522 its reverse (2250273), we get a palindrome (5970795).

The spelling of 3720522 in words is "three million, seven hundred twenty thousand, five hundred twenty-two".