70447140 has 36 divisors (see below), whose sum is σ = 213690204. Its totient is φ = 18785856.

The previous prime is 70447081. The next prime is 70447141. The reversal of 70447140 is 4174407.

It can be written as a sum of positive squares in 2 ways, for example, as 49871844 + 20575296 = 7062^2 + 4536^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (70447141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195507 + ... + 195866.

It is an arithmetic number, because the mean of its divisors is an integer number (5935839).

Almost surely, 2^70447140 is an apocalyptic number.

It is an amenable number.

70447140 is an abundant number, since it is smaller than the sum of its proper divisors (143243064).

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

70447140 is a wasteful number, since it uses less digits than its factorization.

70447140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391388 (or 391383 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 70447140 is about 8393.2794544207. The cubic root of 70447140 is about 413.0041879010.

The spelling of 70447140 in words is "seventy million, four hundred forty-seven thousand, one hundred forty".