3253631220 has 384 divisors, whose sum is σ = 12173414400. Its totient is φ = 705729024.

The previous prime is 3253631159. The next prime is 3253631233. The reversal of 3253631220 is 221363523.

3253631220 is a `hidden beast` number, since 3 + 2 + 5 + 3 + 631 + 2 + 20 = 666.

It is a super-2 number, since 2×3253631220² = 21172232231517376800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7344319 + ... + 7344761.

It is an arithmetic number, because the mean of its divisors is an integer number (31701600).

Almost surely, 2^3253631220 is an apocalyptic number.

3253631220 is a gapful number since it is divisible by the number (30) 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 3253631220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6086707200).

3253631220 is an abundant number, since it is smaller than the sum of its proper divisors (8919783180).

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

3253631220 is a wasteful number, since it uses less digits than its factorization.

3253631220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 3253631220 is about 57040.6102702276. The cubic root of 3253631220 is about 1481.7994942561.

Adding to 3253631220 its reverse (221363523), we get a palindrome (3474994743).

The spelling of 3253631220 in words is "three billion, two hundred fifty-three million, six hundred thirty-one thousand, two hundred twenty".