8172136 has 16 divisors (see below), whose sum is σ = 17511840. Its totient is φ = 3502320.

The previous prime is 8172119. The next prime is 8172137. The reversal of 8172136 is 6312718.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (8172137) 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, 72910 + ... + 73021.

It is an arithmetic number, because the mean of its divisors is an integer number (1094490).

Almost surely, 2^8172136 is an apocalyptic number.

It is an amenable number.

8172136 is an abundant number, since it is smaller than the sum of its proper divisors (9339704).

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

8172136 is a wasteful number, since it uses less digits than its factorization.

8172136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145944 (or 145940 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 8172136 is about 2858.6948070754. The cubic root of 8172136 is about 201.4242994440.

The spelling of 8172136 in words is "eight million, one hundred seventy-two thousand, one hundred thirty-six".