3520285 has 8 divisors (see below), whose sum is σ = 4239576. Its totient is φ = 2806080.

The previous prime is 3520261. The next prime is 3520303. The reversal of 3520285 is 5820253.

It can be written as a sum of positive squares in 4 ways, for example, as 68121 + 3452164 = 261^2 + 1858^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3520285 - 2⁷ = 3520157 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 475 + ... + 2695.

It is an arithmetic number, because the mean of its divisors is an integer number (529947).

Almost surely, 2^3520285 is an apocalyptic number.

It is an amenable number.

3520285 is a deficient number, since it is larger than the sum of its proper divisors (719291).

3520285 is a wasteful number, since it uses less digits than its factorization.

3520285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 3520285 is about 1876.2422551472. The cubic root of 3520285 is about 152.1222037797.

Subtracting 3520285 from its reverse (5820253), we obtain a cube (2299968 = 132³).

The spelling of 3520285 in words is "three million, five hundred twenty thousand, two hundred eighty-five".