71539132 has 12 divisors (see below), whose sum is σ = 143078320. Its totient is φ = 30659616.

The previous prime is 71539079. The next prime is 71539141. The reversal of 71539132 is 23193517.

71539132 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 71539094 and 71539103.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1277457 + ... + 1277512.

Almost surely, 2^71539132 is an apocalyptic number.

It is an amenable number.

71539132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71539132 is a wasteful number, since it uses less digits than its factorization.

71539132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554980 (or 2554978 counting only the distinct ones).

The product of its digits is 5670, while the sum is 31.

The square root of 71539132 is about 8458.0808697955. The cubic root of 71539132 is about 415.1272305499.

The spelling of 71539132 in words is "seventy-one million, five hundred thirty-nine thousand, one hundred thirty-two".