8129272 has 8 divisors (see below), whose sum is σ = 15242400. Its totient is φ = 4064632.

The previous prime is 8129267. The next prime is 8129273. The reversal of 8129272 is 2729218.

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8129273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 508072 + ... + 508087.

It is an arithmetic number, because the mean of its divisors is an integer number (1905300).

Almost surely, 2^8129272 is an apocalyptic number.

It is an amenable number.

8129272 is a deficient number, since it is larger than the sum of its proper divisors (7113128).

8129272 is a wasteful number, since it uses less digits than its factorization.

8129272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016165 (or 1016161 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 8129272 is about 2851.1878226452. The cubic root of 8129272 is about 201.0715156852.

The spelling of 8129272 in words is "eight million, one hundred twenty-nine thousand, two hundred seventy-two".