3520008 has 24 divisors (see below), whose sum is σ = 9533550. Its totient is φ = 1173312.

The previous prime is 3520007. The next prime is 3520009. The reversal of 3520008 is 8000253.

It is an interprime number because it is at equal distance from previous prime (3520007) and next prime (3520009).

It can be written as a sum of positive squares in only one way, i.e., 2883204 + 636804 = 1698^2 + 798^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (3520007) 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, 24373 + ... + 24516.

Almost surely, 2^3520008 is an apocalyptic number.

It is an amenable number.

3520008 is an abundant number, since it is smaller than the sum of its proper divisors (6013542).

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

3520008 is a wasteful number, since it uses less digits than its factorization.

3520008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48901 (or 48894 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 3520008 is about 1876.1684359353. The cubic root of 3520008 is about 152.1182136714.

The spelling of 3520008 in words is "three million, five hundred twenty thousand, eight".