8423740 has 48 divisors (see below), whose sum is σ = 19262880. Its totient is φ = 3075840.

The previous prime is 8423731. The next prime is 8423759. The reversal of 8423740 is 473248.

It is a d-powerful number, because it can be written as 8⁵ + 4³ + 2²³ + 3⁷ + 7² + 4³ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 8423699 and 8423708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46450 + ... + 46630.

It is an arithmetic number, because the mean of its divisors is an integer number (401310).

Almost surely, 2^8423740 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 8423740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9631440).

8423740 is an abundant number, since it is smaller than the sum of its proper divisors (10839140).

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

8423740 is a wasteful number, since it uses less digits than its factorization.

8423740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 8423740 is about 2902.3679987210. The cubic root of 8423740 is about 203.4705932189.

Adding to 8423740 its reverse (473248), we get a palindrome (8896988).

The spelling of 8423740 in words is "eight million, four hundred twenty-three thousand, seven hundred forty".