4247708840 has 32 divisors (see below), whose sum is σ = 9581949000. Its totient is φ = 1694709504.

The previous prime is 4247708833. The next prime is 4247708849. The reversal of 4247708840 is 488077424.

It can be written as a sum of positive squares in 4 ways, for example, as 1544332804 + 2703376036 = 39298^2 + 51994^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4247708791 and 4247708800.

It is not an unprimeable number, because it can be changed into a prime (4247708849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120935 + ... + 152054.

Almost surely, 2^4247708840 is an apocalyptic number.

4247708840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4247708840 is an abundant number, since it is smaller than the sum of its proper divisors (5334240160).

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

4247708840 is a wasteful number, since it uses less digits than its factorization.

4247708840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273389 (or 273385 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 44.

The square root of 4247708840 is about 65174.4492880454. The cubic root of 4247708840 is about 1619.5147711021.

The spelling of 4247708840 in words is "four billion, two hundred forty-seven million, seven hundred eight thousand, eight hundred forty".