3634281 has 48 divisors (see below), whose sum is σ = 6511680. Its totient is φ = 1995840.

The previous prime is 3634271. The next prime is 3634289. The reversal of 3634281 is 1824363.

It is a happy number.

3634281 is a `hidden beast` number, since 3 + 634 + 28 + 1 = 666.

It is not a de Polignac number, because 3634281 - 2⁵ = 3634249 is a prime.

It is a super-2 number, since 2×3634281² = 26415996773922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3634289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54210 + ... + 54276.

It is an arithmetic number, because the mean of its divisors is an integer number (135660).

Almost surely, 2^3634281 is an apocalyptic number.

3634281 is the 1206-th heptagonal number.

It is an amenable number.

3634281 is a deficient number, since it is larger than the sum of its proper divisors (2877399).

3634281 is a wasteful number, since it uses less digits than its factorization.

3634281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 118 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 3634281 is about 1906.3790284201. The cubic root of 3634281 is about 153.7468292029.

The spelling of 3634281 in words is "three million, six hundred thirty-four thousand, two hundred eighty-one".