3128560 has 20 divisors (see below), whose sum is σ = 7274088. Its totient is φ = 1251392.

The previous prime is 3128533. The next prime is 3128579. The reversal of 3128560 is 658213.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19474 + ... + 19633.

Almost surely, 2^3128560 is an apocalyptic number.

It is an amenable number.

3128560 is an abundant number, since it is smaller than the sum of its proper divisors (4145528).

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

3128560 is a wasteful number, since it uses less digits than its factorization.

3128560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39120 (or 39114 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 3128560 is about 1768.7735864152. The cubic root of 3128560 is about 146.2563831923.

The spelling of 3128560 in words is "three million, one hundred twenty-eight thousand, five hundred sixty".