3995136 has 120 divisors (see below), whose sum is σ = 12562440. Its totient is φ = 1253376.

The previous prime is 3995129. The next prime is 3995161. The reversal of 3995136 is 6315993.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a super-2 number, since 2×3995136² = 31922223316992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3995136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235000 + ... + 235016.

It is an arithmetic number, because the mean of its divisors is an integer number (104687).

Almost surely, 2^3995136 is an apocalyptic number.

3995136 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3995136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6281220).

3995136 is an abundant number, since it is smaller than the sum of its proper divisors (8567304).

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

3995136 is an equidigital number, since it uses as much as digits as its factorization.

3995136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 22 counting only the distinct ones).

The product of its digits is 21870, while the sum is 36.

The square root of 3995136 is about 1998.7836301111. The cubic root of 3995136 is about 158.6757364430.

The spelling of 3995136 in words is "three million, nine hundred ninety-five thousand, one hundred thirty-six".