71158490 has 16 divisors (see below), whose sum is σ = 137938248. Its totient is φ = 26273856.

The previous prime is 71158469. The next prime is 71158499. The reversal of 71158490 is 9485117.

It can be written as a sum of positive squares in 4 ways, for example, as 50737129 + 20421361 = 7123^2 + 4519^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 71158490.

It is not an unprimeable number, because it can be changed into a prime (71158499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273557 + ... + 273816.

Almost surely, 2^71158490 is an apocalyptic number.

71158490 is a deficient number, since it is larger than the sum of its proper divisors (66779758).

71158490 is a wasteful number, since it uses less digits than its factorization.

71158490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547393.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 71158490 is about 8435.5491818850. The cubic root of 71158490 is about 414.3896577983.

The spelling of 71158490 in words is "seventy-one million, one hundred fifty-eight thousand, four hundred ninety".