71252470 has 64 divisors (see below), whose sum is σ = 141004800. Its totient is φ = 25833600.

The previous prime is 71252443. The next prime is 71252497. The reversal of 71252470 is 7425217.

It is an interprime number because it is at equal distance from previous prime (71252443) and next prime (71252497).

It is a super-2 number, since 2×71252470² = 10153828962201800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 705420 + ... + 705520.

It is an arithmetic number, because the mean of its divisors is an integer number (2203200).

Almost surely, 2^71252470 is an apocalyptic number.

71252470 is a deficient number, since it is larger than the sum of its proper divisors (69752330).

71252470 is a wasteful number, since it uses less digits than its factorization.

71252470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 71252470 is about 8441.1178169719. The cubic root of 71252470 is about 414.5720075916.

Adding to 71252470 its reverse (7425217), we get a palindrome (78677687).

The spelling of 71252470 in words is "seventy-one million, two hundred fifty-two thousand, four hundred seventy".