3635139228 has 48 divisors (see below), whose sum is σ = 9739693824. Its totient is φ = 1033683840.

The previous prime is 3635139227. The next prime is 3635139247. The reversal of 3635139228 is 8229315363.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 3635139228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3635139227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84825 + ... + 120272.

It is an arithmetic number, because the mean of its divisors is an integer number (202910288).

Almost surely, 2^3635139228 is an apocalyptic number.

It is an amenable number.

3635139228 is an abundant number, since it is smaller than the sum of its proper divisors (6104554596).

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

3635139228 is a wasteful number, since it uses less digits than its factorization.

3635139228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205322 (or 205320 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 3635139228 is about 60292.1158029804. The cubic root of 3635139228 is about 1537.5893058311.

The spelling of 3635139228 in words is "three billion, six hundred thirty-five million, one hundred thirty-nine thousand, two hundred twenty-eight".