3520146 has 16 divisors (see below), whose sum is σ = 8046144. Its totient is φ = 1005744.

The previous prime is 3520141. The next prime is 3520147. The reversal of 3520146 is 6410253.

It is a happy number.

It is a super-2 number, since 2×3520146² = 24782855722632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (3520141) 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, 41865 + ... + 41948.

It is an arithmetic number, because the mean of its divisors is an integer number (502884).

Almost surely, 2^3520146 is an apocalyptic number.

3520146 is an abundant number, since it is smaller than the sum of its proper divisors (4525998).

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

3520146 is a wasteful number, since it uses less digits than its factorization.

3520146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83825.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 3520146 is about 1876.2052126567. The cubic root of 3520146 is about 152.1202015493.

Adding to 3520146 its reverse (6410253), we get a palindrome (9930399).

The spelling of 3520146 in words is "three million, five hundred twenty thousand, one hundred forty-six".