71630436 has 24 divisors (see below), whose sum is σ = 167438880. Its totient is φ = 23833792.

The previous prime is 71630431. The next prime is 71630443. The reversal of 71630436 is 63403617.

It is not an unprimeable number, because it can be changed into a prime (71630431) 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 7 ways as a sum of consecutive naturals, for example, 1960 + ... + 12128.

It is an arithmetic number, because the mean of its divisors is an integer number (6976620).

Almost surely, 2^71630436 is an apocalyptic number.

It is an amenable number.

71630436 is an abundant number, since it is smaller than the sum of its proper divisors (95808444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71630436 is a wasteful number, since it uses less digits than its factorization.

71630436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10763 (or 10761 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 71630436 is about 8463.4765906216. The cubic root of 71630436 is about 415.3037617348.

The spelling of 71630436 in words is "seventy-one million, six hundred thirty thousand, four hundred thirty-six".