70543140 has 48 divisors (see below), whose sum is σ = 198760128. Its totient is φ = 18693504.

The previous prime is 70543069. The next prime is 70543157. The reversal of 70543140 is 4134507.

It is a self number, because there is not a number n which added to its sum of digits gives 70543140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6174 + ... + 13386.

It is an arithmetic number, because the mean of its divisors is an integer number (4140836).

Almost surely, 2^70543140 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 70543140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99380064).

70543140 is an abundant number, since it is smaller than the sum of its proper divisors (128216988).

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

70543140 is a wasteful number, since it uses less digits than its factorization.

70543140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7388 (or 7386 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 70543140 is about 8398.9963686145. The cubic root of 70543140 is about 413.1917063048.

Adding to 70543140 its reverse (4134507), we get a palindrome (74677647).

The spelling of 70543140 in words is "seventy million, five hundred forty-three thousand, one hundred forty".