3255631872 has 136 divisors (see below), whose sum is σ = 8996713440. Its totient is φ = 1045954560.

The previous prime is 3255631823. The next prime is 3255631889. The reversal of 3255631872 is 2781365523.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5701347 + ... + 5701917.

Almost surely, 2^3255631872 is an apocalyptic number.

3255631872 is a gapful number since it is divisible by the number (32) 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 3255631872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4498356720).

3255631872 is an abundant number, since it is smaller than the sum of its proper divisors (5741081568).

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

3255631872 is an frugal number, since it uses more digits than its factorization.

3255631872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 605 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 3255631872 is about 57058.1446596365. The cubic root of 3255631872 is about 1482.1031506422.

The spelling of 3255631872 in words is "three billion, two hundred fifty-five million, six hundred thirty-one thousand, eight hundred seventy-two".