3261479840 has 48 divisors (see below), whose sum is σ = 7777298592. Its totient is φ = 1292392704.

The previous prime is 3261479839. The next prime is 3261479857. The reversal of 3261479840 is 489741623.

It is a junction number, because it is equal to n+sod(n) for n = 3261479791 and 3261479800.

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, 78134 + ... + 112373.

It is an arithmetic number, because the mean of its divisors is an integer number (162027054).

Almost surely, 2^3261479840 is an apocalyptic number.

It is an amenable number.

3261479840 is an abundant number, since it is smaller than the sum of its proper divisors (4515818752).

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

3261479840 is a wasteful number, since it uses less digits than its factorization.

3261479840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190629 (or 190621 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 3261479840 is about 57109.3673577286. The cubic root of 3261479840 is about 1482.9900350459.

The spelling of 3261479840 in words is "three billion, two hundred sixty-one million, four hundred seventy-nine thousand, eight hundred forty".