70161380 has 48 divisors (see below), whose sum is σ = 159667200. Its totient is φ = 25794048.

The previous prime is 70161379. The next prime is 70161389. The reversal of 70161380 is 8316107.

It is not an unprimeable number, because it can be changed into a prime (70161389) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12221 + ... + 17019.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^70161380 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 70161380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79833600).

70161380 is an abundant number, since it is smaller than the sum of its proper divisors (89505820).

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

70161380 is a wasteful number, since it uses less digits than its factorization.

70161380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868 (or 4866 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 70161380 is about 8376.2390128267. The cubic root of 70161380 is about 412.4449978700. Note that the first 3 decimals are identical.

Adding to 70161380 its reverse (8316107), we get a palindrome (78477487).

The spelling of 70161380 in words is "seventy million, one hundred sixty-one thousand, three hundred eighty".