3247145280 has 224 divisors, whose sum is σ = 11506809600. Its totient is φ = 862009344.

The previous prime is 3247145273. The next prime is 3247145303. The reversal of 3247145280 is 825417423.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2271606 + ... + 2273034.

Almost surely, 2^3247145280 is an apocalyptic number.

3247145280 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 3247145280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5753404800).

3247145280 is an abundant number, since it is smaller than the sum of its proper divisors (8259664320).

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

3247145280 is a wasteful number, since it uses less digits than its factorization.

3247145280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 3247145280 is about 56983.7282037601. The cubic root of 3247145280 is about 1480.8142098881.

The spelling of 3247145280 in words is "three billion, two hundred forty-seven million, one hundred forty-five thousand, two hundred eighty".