3530020 has 24 divisors (see below), whose sum is σ = 7983864. Its totient is φ = 1303296.

The previous prime is 3530011. The next prime is 3530027. The reversal of 3530020 is 200353.

3530020 = T₁₆₅ + T₁₆₆ + ... + T₂₉₄.

It can be written as a sum of positive squares in 4 ways, for example, as 599076 + 2930944 = 774^2 + 1712^2 .

It is a super-2 number, since 2×3530020² = 24922082400800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3530027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6529 + ... + 7048.

It is an arithmetic number, because the mean of its divisors is an integer number (332661).

Almost surely, 2^3530020 is an apocalyptic number.

It is an amenable number.

3530020 is an abundant number, since it is smaller than the sum of its proper divisors (4453844).

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

3530020 is a wasteful number, since it uses less digits than its factorization.

3530020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13599 (or 13597 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 13.

The square root of 3530020 is about 1878.8347452610. The cubic root of 3530020 is about 152.2623010203.

Adding to 3530020 its reverse (200353), we get a palindrome (3730373).

The spelling of 3530020 in words is "three million, five hundred thirty thousand, twenty".