3995128 has 8 divisors (see below), whose sum is σ = 7490880. Its totient is φ = 1997560.

The previous prime is 3995113. The next prime is 3995129. The reversal of 3995128 is 8215993.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×3995128² = 31922095472768, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3995129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249688 + ... + 249703.

It is an arithmetic number, because the mean of its divisors is an integer number (936360).

Almost surely, 2^3995128 is an apocalyptic number.

It is an amenable number.

3995128 is a deficient number, since it is larger than the sum of its proper divisors (3495752).

3995128 is a wasteful number, since it uses less digits than its factorization.

3995128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499397 (or 499393 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 3995128 is about 1998.7816288930. The cubic root of 3995128 is about 158.6756305303.

The spelling of 3995128 in words is "three million, nine hundred ninety-five thousand, one hundred twenty-eight".