71172162 has 16 divisors (see below), whose sum is σ = 158160480. Its totient is φ = 23724036.

The previous prime is 71172161. The next prime is 71172173. The reversal of 71172162 is 26127117.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (71172161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658948 + ... + 659055.

It is an arithmetic number, because the mean of its divisors is an integer number (9885030).

Almost surely, 2^71172162 is an apocalyptic number.

71172162 is an abundant number, since it is smaller than the sum of its proper divisors (86988318).

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

71172162 is a wasteful number, since it uses less digits than its factorization.

71172162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318014 (or 1318008 counting only the distinct ones).

The product of its digits is 1176, while the sum is 27.

The square root of 71172162 is about 8436.3595229222. The cubic root of 71172162 is about 414.4161956136.

Adding to 71172162 its reverse (26127117), we get a palindrome (97299279).

The spelling of 71172162 in words is "seventy-one million, one hundred seventy-two thousand, one hundred sixty-two".