802313640 has 256 divisors, whose sum is σ = 2869344000. Its totient is φ = 198696960.

The previous prime is 802313609. The next prime is 802313647. The reversal of 802313640 is 46313208.

It is a happy number.

802313640 is a `hidden beast` number, since 8 + 0 + 2 + 3 + 13 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (802313647) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1633795 + ... + 1634285.

It is an arithmetic number, because the mean of its divisors is an integer number (11208375).

Almost surely, 2^802313640 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 802313640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1434672000).

802313640 is an abundant number, since it is smaller than the sum of its proper divisors (2067030360).

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

802313640 is a wasteful number, since it uses less digits than its factorization.

802313640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 607 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 802313640 is about 28325.1414824357. The cubic root of 802313640 is about 929.2118191933.

Adding to 802313640 its reverse (46313208), we get a palindrome (848626848).

The spelling of 802313640 in words is "eight hundred two million, three hundred thirteen thousand, six hundred forty".