71534920 has 16 divisors (see below), whose sum is σ = 160953660. Its totient is φ = 28613952.

The previous prime is 71534917. The next prime is 71534921. The reversal of 71534920 is 2943517.

It can be written as a sum of positive squares in 2 ways, for example, as 69455556 + 2079364 = 8334^2 + 1442^2 .

It is not an unprimeable number, because it can be changed into a prime (71534921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 894147 + ... + 894226.

Almost surely, 2^71534920 is an apocalyptic number.

It is an amenable number.

71534920 is an abundant number, since it is smaller than the sum of its proper divisors (89418740).

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

71534920 is a wasteful number, since it uses less digits than its factorization.

71534920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788384 (or 1788380 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 71534920 is about 8457.8318734768. The cubic root of 71534920 is about 415.1190832597.

The spelling of 71534920 in words is "seventy-one million, five hundred thirty-four thousand, nine hundred twenty".