8212740 has 24 divisors (see below), whose sum is σ = 22995840. Its totient is φ = 2190048.

The previous prime is 8212723. The next prime is 8212759. The reversal of 8212740 is 472128.

It is a self number, because there is not a number n which added to its sum of digits gives 8212740.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68380 + ... + 68499.

It is an arithmetic number, because the mean of its divisors is an integer number (958160).

Almost surely, 2^8212740 is an apocalyptic number.

It is an amenable number.

8212740 is an abundant number, since it is smaller than the sum of its proper divisors (14783100).

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

8212740 is a wasteful number, since it uses less digits than its factorization.

8212740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136891 (or 136889 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 8212740 is about 2865.7878497893. The cubic root of 8212740 is about 201.7573467687.

Adding to 8212740 its reverse (472128), we get a palindrome (8684868).

The spelling of 8212740 in words is "eight million, two hundred twelve thousand, seven hundred forty".