71156146 has 8 divisors (see below), whose sum is σ = 106803180. Its totient is φ = 35555088.

The previous prime is 71156119. The next prime is 71156147. The reversal of 71156146 is 64165117.

71156146 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 2 ways, for example, as 60233121 + 10923025 = 7761^2 + 3305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×71156146² = 10126394227146632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71156147) 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 3 ways as a sum of consecutive naturals, for example, 7321 + ... + 13996.

Almost surely, 2^71156146 is an apocalyptic number.

71156146 is a deficient number, since it is larger than the sum of its proper divisors (35647034).

71156146 is a wasteful number, since it uses less digits than its factorization.

71156146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22988.

The product of its digits is 5040, while the sum is 31.

The square root of 71156146 is about 8435.4102449140. The cubic root of 71156146 is about 414.3851076736.

The spelling of 71156146 in words is "seventy-one million, one hundred fifty-six thousand, one hundred forty-six".