3128704 has 16 divisors (see below), whose sum is σ = 6233220. Its totient is φ = 1564288.

The previous prime is 3128701. The next prime is 3128729. The reversal of 3128704 is 4078213.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12094 + ... + 12349.

Almost surely, 2^3128704 is an apocalyptic number.

It is an amenable number.

3128704 is a deficient number, since it is larger than the sum of its proper divisors (3104516).

3128704 is an equidigital number, since it uses as much as digits as its factorization.

3128704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24457 (or 24445 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 3128704 is about 1768.8142921177. The cubic root of 3128704 is about 146.2586270996.

The spelling of 3128704 in words is "three million, one hundred twenty-eight thousand, seven hundred four".