3261455280 has 400 divisors, whose sum is σ = 11877406464. Its totient is φ = 828610560.

The previous prime is 3261455257. The next prime is 3261455299. The reversal of 3261455280 is 825541623.

3261455280 is a `hidden beast` number, since 3 + 26 + 1 + 4 + 552 + 80 = 666.

3261455280 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 14625249 + ... + 14625471.

Almost surely, 2^3261455280 is an apocalyptic number.

3261455280 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 3261455280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5938703232).

3261455280 is an abundant number, since it is smaller than the sum of its proper divisors (8615951184).

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

3261455280 is a wasteful number, since it uses less digits than its factorization.

3261455280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 3261455280 is about 57109.1523313033. The cubic root of 3261455280 is about 1482.9863125714.

The spelling of 3261455280 in words is "three billion, two hundred sixty-one million, four hundred fifty-five thousand, two hundred eighty".