3240728847 has 12 divisors (see below), whose sum is σ = 4795225344. Its totient is φ = 2107790880.

The previous prime is 3240728837. The next prime is 3240728867. The reversal of 3240728847 is 7488270423.

3240728847 is a `hidden beast` number, since 324 + 0 + 7 + 288 + 47 = 666.

It is not a de Polignac number, because 3240728847 - 2⁶ = 3240728783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3240728837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4390863 + ... + 4391600.

It is an arithmetic number, because the mean of its divisors is an integer number (399602112).

Almost surely, 2^3240728847 is an apocalyptic number.

3240728847 is a deficient number, since it is larger than the sum of its proper divisors (1554496497).

3240728847 is a wasteful number, since it uses less digits than its factorization.

3240728847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8782510 (or 8782507 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The square root of 3240728847 is about 56927.3997913131. The cubic root of 3240728847 is about 1479.8381925307.

The spelling of 3240728847 in words is "three billion, two hundred forty million, seven hundred twenty-eight thousand, eight hundred forty-seven".