8425720 has 16 divisors (see below), whose sum is σ = 18957960. Its totient is φ = 3370272.

The previous prime is 8425717. The next prime is 8425741. The reversal of 8425720 is 275248.

It is a congruent 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, 105282 + ... + 105361.

Almost surely, 2^8425720 is an apocalyptic number.

It is an amenable number.

8425720 is an abundant number, since it is smaller than the sum of its proper divisors (10532240).

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

8425720 is a wasteful number, since it uses less digits than its factorization.

8425720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210654 (or 210650 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 8425720 is about 2902.7090794635. The cubic root of 8425720 is about 203.4865338903.

The spelling of 8425720 in words is "eight million, four hundred twenty-five thousand, seven hundred twenty".