71244070 has 24 divisors (see below), whose sum is σ = 129978576. Its totient is φ = 28113648.

The previous prime is 71244067. The next prime is 71244071. The reversal of 71244070 is 7044217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71244071) 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 11 ways as a sum of consecutive naturals, for example, 270759 + ... + 271021.

It is an arithmetic number, because the mean of its divisors is an integer number (5415774).

Almost surely, 2^71244070 is an apocalyptic number.

71244070 is a deficient number, since it is larger than the sum of its proper divisors (58734506).

71244070 is a wasteful number, since it uses less digits than its factorization.

71244070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 373 counting only the distinct ones).

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

The square root of 71244070 is about 8440.6202378735. The cubic root of 71244070 is about 414.5557155636. Note that the first 3 decimals are identical.

Adding to 71244070 its reverse (7044217), we get a palindrome (78288287).

The spelling of 71244070 in words is "seventy-one million, two hundred forty-four thousand, seventy".