3281979140 has 24 divisors (see below), whose sum is σ = 7518716352. Its totient is φ = 1193446880.

The previous prime is 3281979137. The next prime is 3281979161. The reversal of 3281979140 is 419791823.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 3281979091 and 3281979100.

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, 7458824 + ... + 7459263.

It is an arithmetic number, because the mean of its divisors is an integer number (313279848).

Almost surely, 2^3281979140 is an apocalyptic number.

It is an amenable number.

3281979140 is an abundant number, since it is smaller than the sum of its proper divisors (4236737212).

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

3281979140 is a wasteful number, since it uses less digits than its factorization.

3281979140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14918107 (or 14918105 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 3281979140 is about 57288.5602891188. The cubic root of 3281979140 is about 1486.0905486421.

The spelling of 3281979140 in words is "three billion, two hundred eighty-one million, nine hundred seventy-nine thousand, one hundred forty".