71543952 has 40 divisors (see below), whose sum is σ = 205358880. Its totient is φ = 23847840.

The previous prime is 71543891. The next prime is 71543971. The reversal of 71543952 is 25934517.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82374 + ... + 83237.

It is an arithmetic number, because the mean of its divisors is an integer number (5133972).

Almost surely, 2^71543952 is an apocalyptic number.

71543952 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

71543952 is an abundant number, since it is smaller than the sum of its proper divisors (133814928).

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

71543952 is a wasteful number, since it uses less digits than its factorization.

71543952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165628 (or 165616 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 71543952 is about 8458.3657996093. The cubic root of 71543952 is about 415.1365535048.

The spelling of 71543952 in words is "seventy-one million, five hundred forty-three thousand, nine hundred fifty-two".