71353472 has 16 divisors (see below), whose sum is σ = 142149750. Its totient is φ = 35676672.

The previous prime is 71353439. The next prime is 71353481. The reversal of 71353472 is 27435317.

It can be written as a sum of positive squares in only one way, i.e., 57395776 + 13957696 = 7576^2 + 3736^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278597 + ... + 278852.

Almost surely, 2^71353472 is an apocalyptic number.

It is an amenable number.

71353472 is a deficient number, since it is larger than the sum of its proper divisors (70796278).

71353472 is an equidigital number, since it uses as much as digits as its factorization.

71353472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557463 (or 557451 counting only the distinct ones).

The product of its digits is 17640, while the sum is 32.

The square root of 71353472 is about 8447.0984367415. The cubic root of 71353472 is about 414.7678035285.

Adding to 71353472 its reverse (27435317), we get a palindrome (98788789).

The spelling of 71353472 in words is "seventy-one million, three hundred fifty-three thousand, four hundred seventy-two".