70878340 has 96 divisors (see below), whose sum is σ = 168426720. Its totient is φ = 24883200.

The previous prime is 70878323. The next prime is 70878359. The reversal of 70878340 is 4387807.

It can be written as a sum of positive squares in 16 ways, for example, as 58614336 + 12264004 = 7656^2 + 3502^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 70878340.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650206 + ... + 650314.

It is an arithmetic number, because the mean of its divisors is an integer number (1754445).

Almost surely, 2^70878340 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 70878340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84213360).

70878340 is an abundant number, since it is smaller than the sum of its proper divisors (97548380).

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

70878340 is a wasteful number, since it uses less digits than its factorization.

70878340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 70878340 is about 8418.9274851373. The cubic root of 70878340 is about 413.8451271006.

The spelling of 70878340 in words is "seventy million, eight hundred seventy-eight thousand, three hundred forty".