71520226 has 16 divisors (see below), whose sum is σ = 108501120. Its totient is φ = 35355600.

The previous prime is 71520181. The next prime is 71520233. The reversal of 71520226 is 62202517.

It is a self number, because there is not a number n which added to its sum of digits gives 71520226.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 101676 + ... + 102376.

It is an arithmetic number, because the mean of its divisors is an integer number (6781320).

Almost surely, 2^71520226 is an apocalyptic number.

71520226 is a deficient number, since it is larger than the sum of its proper divisors (36980894).

71520226 is a wasteful number, since it uses less digits than its factorization.

71520226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 71520226 is about 8456.9631665273. The cubic root of 71520226 is about 415.0906580863.

The spelling of 71520226 in words is "seventy-one million, five hundred twenty thousand, two hundred twenty-six".