3634969728 has 256 divisors, whose sum is σ = 10901237760. Its totient is φ = 1065553920.

The previous prime is 3634969691. The next prime is 3634969753. The reversal of 3634969728 is 8279694363.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 12844275 + ... + 12844557.

It is an arithmetic number, because the mean of its divisors is an integer number (42582960).

Almost surely, 2^3634969728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3634969728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5450618880).

3634969728 is an abundant number, since it is smaller than the sum of its proper divisors (7266268032).

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

3634969728 is a wasteful number, since it uses less digits than its factorization.

3634969728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 415 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 57.

The square root of 3634969728 is about 60290.7101301685. The cubic root of 3634969728 is about 1537.5654071190.

The spelling of 3634969728 in words is "three billion, six hundred thirty-four million, nine hundred sixty-nine thousand, seven hundred twenty-eight".