4256704240 has 40 divisors (see below), whose sum is σ = 10216096128. Its totient is φ = 1647755520.

The previous prime is 4256704217. The next prime is 4256704259. The reversal of 4256704240 is 424076524.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4256704196 and 4256704205.

It is a congruent number.

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, 855727 + ... + 860686.

Almost surely, 2^4256704240 is an apocalyptic number.

4256704240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4256704240 is an abundant number, since it is smaller than the sum of its proper divisors (5959391888).

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

4256704240 is a wasteful number, since it uses less digits than its factorization.

4256704240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716457 (or 1716451 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 4256704240 is about 65243.4229635448. The cubic root of 4256704240 is about 1620.6571839566.

The spelling of 4256704240 in words is "four billion, two hundred fifty-six million, seven hundred four thousand, two hundred forty".