71305372 has 12 divisors (see below), whose sum is σ = 124889296. Its totient is φ = 35622720.

The previous prime is 71305369. The next prime is 71305397. The reversal of 71305372 is 27350317.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 71305372.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1629 + ... + 12052.

Almost surely, 2^71305372 is an apocalyptic number.

It is an amenable number.

71305372 is a deficient number, since it is larger than the sum of its proper divisors (53583924).

71305372 is a wasteful number, since it uses less digits than its factorization.

71305372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14988 (or 14986 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 71305372 is about 8444.2508252657. The cubic root of 71305372 is about 414.6745830429.

Adding to 71305372 its reverse (27350317), we get a palindrome (98655689).

The spelling of 71305372 in words is "seventy-one million, three hundred five thousand, three hundred seventy-two".