71253434 has 16 divisors (see below), whose sum is σ = 122732736. Its totient is φ = 30391200.

The previous prime is 71253433. The next prime is 71253467. The reversal of 71253434 is 43435217.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71253397 and 71253406.

It is not an unprimeable number, because it can be changed into a prime (71253433) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9107 + ... + 15014.

It is an arithmetic number, because the mean of its divisors is an integer number (7670796).

Almost surely, 2^71253434 is an apocalyptic number.

71253434 is a deficient number, since it is larger than the sum of its proper divisors (51479302).

71253434 is a wasteful number, since it uses less digits than its factorization.

71253434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24341.

The product of its digits is 10080, while the sum is 29.

The square root of 71253434 is about 8441.1749182208. The cubic root of 71253434 is about 414.5738772139.

The spelling of 71253434 in words is "seventy-one million, two hundred fifty-three thousand, four hundred thirty-four".