708478440 has 64 divisors (see below), whose sum is σ = 2134641600. Its totient is φ = 188109312.

The previous prime is 708478409. The next prime is 708478457. The reversal of 708478440 is 44874807.

It is a junction number, because it is equal to n+sod(n) for n = 708478392 and 708478401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15291 + ... + 40629.

It is an arithmetic number, because the mean of its divisors is an integer number (33353775).

Almost surely, 2^708478440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 708478440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1067320800).

708478440 is an abundant number, since it is smaller than the sum of its proper divisors (1426163160).

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

708478440 is a wasteful number, since it uses less digits than its factorization.

708478440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25586 (or 25582 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 42.

The square root of 708478440 is about 26617.2583111033. The cubic root of 708478440 is about 891.4744066610.

The spelling of 708478440 in words is "seven hundred eight million, four hundred seventy-eight thousand, four hundred forty".