70144072 has 32 divisors (see below), whose sum is σ = 137018880. Its totient is φ = 33626880.

The previous prime is 70144049. The next prime is 70144079. The reversal of 70144072 is 27044107.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (70144079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26773 + ... + 29275.

It is an arithmetic number, because the mean of its divisors is an integer number (4281840).

Almost surely, 2^70144072 is an apocalyptic number.

It is an amenable number.

70144072 is a deficient number, since it is larger than the sum of its proper divisors (66874808).

70144072 is a wasteful number, since it uses less digits than its factorization.

70144072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653 (or 2649 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 70144072 is about 8375.2057885165. The cubic root of 70144072 is about 412.4110799458.

Adding to 70144072 its reverse (27044107), we get a palindrome (97188179).

The spelling of 70144072 in words is "seventy million, one hundred forty-four thousand, seventy-two".