71401672 has 16 divisors (see below), whose sum is σ = 136992240. Its totient is φ = 34870416.

The previous prime is 71401669. The next prime is 71401679. The reversal of 71401672 is 27610417.

It is a self number, because there is not a number n which added to its sum of digits gives 71401672.

It is not an unprimeable number, because it can be changed into a prime (71401679) by changing a digit.

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, 103438 + ... + 104125.

It is an arithmetic number, because the mean of its divisors is an integer number (8562015).

Almost surely, 2^71401672 is an apocalyptic number.

It is an amenable number.

71401672 is a deficient number, since it is larger than the sum of its proper divisors (65590568).

71401672 is a wasteful number, since it uses less digits than its factorization.

71401672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207612 (or 207608 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 71401672 is about 8449.9510057751. The cubic root of 71401672 is about 414.8611758046.

The spelling of 71401672 in words is "seventy-one million, four hundred one thousand, six hundred seventy-two".