71409156 has 48 divisors (see below), whose sum is σ = 205075584. Its totient is φ = 18832896.

The previous prime is 71409139. The next prime is 71409161. The reversal of 71409156 is 65190417.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31605 + ... + 33788.

It is an arithmetic number, because the mean of its divisors is an integer number (4272408).

Almost surely, 2^71409156 is an apocalyptic number.

It is an amenable number.

71409156 is an abundant number, since it is smaller than the sum of its proper divisors (133666428).

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

71409156 is a wasteful number, since it uses less digits than its factorization.

71409156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65420 (or 65418 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 71409156 is about 8450.3938369759. The cubic root of 71409156 is about 414.8756699216.

The spelling of 71409156 in words is "seventy-one million, four hundred nine thousand, one hundred fifty-six".