70008140 has 12 divisors (see below), whose sum is σ = 147017136. Its totient is φ = 28003248.

The previous prime is 70008109. The next prime is 70008143. The reversal of 70008140 is 4180007.

It is a happy number.

It is a super-2 number, since 2×70008140² = 9802279332519200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 3500407 = 70008140 / (7 + 0 + 0 + 0 + 8 + 1 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (70008143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750184 + ... + 1750223.

It is an arithmetic number, because the mean of its divisors is an integer number (12251428).

Almost surely, 2^70008140 is an apocalyptic number.

It is an amenable number.

70008140 is an abundant number, since it is smaller than the sum of its proper divisors (77008996).

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

70008140 is a wasteful number, since it uses less digits than its factorization.

70008140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500416 (or 3500414 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 70008140 is about 8367.0867092435. The cubic root of 70008140 is about 412.1445042485.

Adding to 70008140 its reverse (4180007), we get a palindrome (74188147).

The spelling of 70008140 in words is "seventy million, eight thousand, one hundred forty".