3257474220 has 576 divisors, whose sum is σ = 13473008640. Its totient is φ = 615168000.

The previous prime is 3257474173. The next prime is 3257474221. The reversal of 3257474220 is 224747523.

It is a happy number.

It is a super-3 number, since 3×3257474220³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3257474221) 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 191 ways as a sum of consecutive naturals, for example, 18198091 + ... + 18198269.

It is an arithmetic number, because the mean of its divisors is an integer number (23390640).

Almost surely, 2^3257474220 is an apocalyptic number.

3257474220 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 3257474220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6736504320).

3257474220 is an abundant number, since it is smaller than the sum of its proper divisors (10215534420).

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

3257474220 is a wasteful number, since it uses less digits than its factorization.

3257474220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 36.

The square root of 3257474220 is about 57074.2868549402. The cubic root of 3257474220 is about 1482.3826698442.

The spelling of 3257474220 in words is "three billion, two hundred fifty-seven million, four hundred seventy-four thousand, two hundred twenty".