8451340 has 12 divisors (see below), whose sum is σ = 17747856. Its totient is φ = 3380528.

The previous prime is 8451323. The next prime is 8451353. The reversal of 8451340 is 431548.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211264 + ... + 211303.

It is an arithmetic number, because the mean of its divisors is an integer number (1478988).

Almost surely, 2^8451340 is an apocalyptic number.

It is an amenable number.

8451340 is an abundant number, since it is smaller than the sum of its proper divisors (9296516).

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

8451340 is a wasteful number, since it uses less digits than its factorization.

8451340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422576 (or 422574 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 8451340 is about 2907.1188486197. The cubic root of 8451340 is about 203.6925716680.

Adding to 8451340 its reverse (431548), we get a palindrome (8882888).

The spelling of 8451340 in words is "eight million, four hundred fifty-one thousand, three hundred forty".