70870140 has 240 divisors, whose sum is σ = 251010144. Its totient is φ = 16588800.

The previous prime is 70870139. The next prime is 70870157. The reversal of 70870140 is 4107807.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 730572 + ... + 730668.

Almost surely, 2^70870140 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 70870140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125505072).

70870140 is an abundant number, since it is smaller than the sum of its proper divisors (180140004).

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

70870140 is a wasteful number, since it uses less digits than its factorization.

70870140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 70870140 is about 8418.4404731518. The cubic root of 70870140 is about 413.8291670723.

Adding to 70870140 its reverse (4107807), we get a palindrome (74977947).

The spelling of 70870140 in words is "seventy million, eight hundred seventy thousand, one hundred forty".