3521024 has 60 divisors (see below), whose sum is σ = 7920066. Its totient is φ = 1554432.

The previous prime is 3520999. The next prime is 3521029. The reversal of 3521024 is 4201253.

It can be written as a sum of positive squares in only one way, i.e., 3385600 + 135424 = 1840^2 + 368^2 .

It is a super-2 number, since 2×3521024² = 24795220017152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3520993 and 3521011.

It is not an unprimeable number, because it can be changed into a prime (3521029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153077 + ... + 153099.

Almost surely, 2^3521024 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 3521024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3960033).

3521024 is an abundant number, since it is smaller than the sum of its proper divisors (4399042).

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

3521024 is an equidigital number, since it uses as much as digits as its factorization.

3521024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 3521024 is about 1876.4391810021. The cubic root of 3521024 is about 152.1328478462.

Adding to 3521024 its reverse (4201253), we get a palindrome (7722277).

The spelling of 3521024 in words is "three million, five hundred twenty-one thousand, twenty-four".