8724940 has 72 divisors (see below), whose sum is σ = 22120560. Its totient is φ = 2878848.

The previous prime is 8724929. The next prime is 8724943. The reversal of 8724940 is 494278.

It is a happy number.

8724940 is nontrivially palindromic in base 11.

It is a super-2 number, since 2×8724940² = 152249156007200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8724896 and 8724905.

It is not an unprimeable number, because it can be changed into a prime (8724943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28267 + ... + 28573.

It is an arithmetic number, because the mean of its divisors is an integer number (307230).

Almost surely, 2^8724940 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 8724940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11060280).

8724940 is an abundant number, since it is smaller than the sum of its proper divisors (13395620).

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

8724940 is a wasteful number, since it uses less digits than its factorization.

8724940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 8724940 is about 2953.8009411604. The cubic root of 8724940 is about 205.8673542015.

The spelling of 8724940 in words is "eight million, seven hundred twenty-four thousand, nine hundred forty".