8072147 has 4 divisors (see below), whose sum is σ = 8130360. Its totient is φ = 8013936.

The previous prime is 8072143. The next prime is 8072159. The reversal of 8072147 is 7412708.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8072147 - 2² = 8072143 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8072143) 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, 28898 + ... + 29175.

It is an arithmetic number, because the mean of its divisors is an integer number (2032590).

Almost surely, 2^8072147 is an apocalyptic number.

8072147 is a deficient number, since it is larger than the sum of its proper divisors (58213).

8072147 is a wasteful number, since it uses less digits than its factorization.

8072147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58212.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 8072147 is about 2841.1524070349. The cubic root of 8072147 is about 200.5994266436.

It can be divided in two parts, 80 and 72147, that added together give a palindrome (72227).

The spelling of 8072147 in words is "eight million, seventy-two thousand, one hundred forty-seven".