8223740 has 24 divisors (see below), whose sum is σ = 19737312. Its totient is φ = 2819520.

The previous prime is 8223737. The next prime is 8223749. The reversal of 8223740 is 473228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8223749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29231 + ... + 29510.

It is an arithmetic number, because the mean of its divisors is an integer number (822388).

Almost surely, 2^8223740 is an apocalyptic number.

It is an amenable number.

8223740 is an abundant number, since it is smaller than the sum of its proper divisors (11513572).

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

8223740 is a wasteful number, since it uses less digits than its factorization.

8223740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58757 (or 58755 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 8223740 is about 2867.7064005926. The cubic root of 8223740 is about 201.8473833341.

Adding to 8223740 its reverse (473228), we get a palindrome (8696968).

The spelling of 8223740 in words is "eight million, two hundred twenty-three thousand, seven hundred forty".