8242740 has 144 divisors (see below), whose sum is σ = 28619136. Its totient is φ = 1900800.

The previous prime is 8242733. The next prime is 8242777. The reversal of 8242740 is 472428.

8242740 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45450 + ... + 45630.

It is an arithmetic number, because the mean of its divisors is an integer number (198744).

Almost surely, 2^8242740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8242740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14309568).

8242740 is an abundant number, since it is smaller than the sum of its proper divisors (20376396).

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

8242740 is a wasteful number, since it uses less digits than its factorization.

8242740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 8242740 is about 2871.0172413275. The cubic root of 8242740 is about 202.0027121160.

The spelling of 8242740 in words is "eight million, two hundred forty-two thousand, seven hundred forty".