8129740 has 24 divisors (see below), whose sum is σ = 18077472. Its totient is φ = 3060480.

The previous prime is 8129707. The next prime is 8129743. The reversal of 8129740 is 479218.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8129743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11616 + ... + 12295.

It is an arithmetic number, because the mean of its divisors is an integer number (753228).

Almost surely, 2^8129740 is an apocalyptic number.

It is an amenable number.

8129740 is an abundant number, since it is smaller than the sum of its proper divisors (9947732).

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

8129740 is a wasteful number, since it uses less digits than its factorization.

8129740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23937 (or 23935 counting only the distinct ones).

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

The square root of 8129740 is about 2851.2698925216. The cubic root of 8129740 is about 201.0753741555.

The spelling of 8129740 in words is "eight million, one hundred twenty-nine thousand, seven hundred forty".