3520521004 has 96 divisors (see below), whose sum is σ = 8557516800. Its totient is φ = 1222421760.

The previous prime is 3520520987. The next prime is 3520521061. The reversal of 3520521004 is 4001250253.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100957 + ... + 131275.

It is an arithmetic number, because the mean of its divisors is an integer number (89140800).

Almost surely, 2^3520521004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3520521004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4278758400).

3520521004 is an abundant number, since it is smaller than the sum of its proper divisors (5036995796).

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

3520521004 is a wasteful number, since it uses less digits than its factorization.

3520521004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30383 (or 30381 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 3520521004 is about 59333.9784946198. The cubic root of 3520521004 is about 1521.2560318688.

Adding to 3520521004 its reverse (4001250253), we get a palindrome (7521771257).

The spelling of 3520521004 in words is "three billion, five hundred twenty million, five hundred twenty-one thousand, four".