8418720 has 48 divisors (see below), whose sum is σ = 26520480. Its totient is φ = 2244864.

The previous prime is 8418719. The next prime is 8418779. The reversal of 8418720 is 278148.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

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, 8290 + ... + 9249.

It is an arithmetic number, because the mean of its divisors is an integer number (552510).

Almost surely, 2^8418720 is an apocalyptic number.

8418720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8418720 is an abundant number, since it is smaller than the sum of its proper divisors (18101760).

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

8418720 is a wasteful number, since it uses less digits than its factorization.

8418720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17557 (or 17549 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 8418720 is about 2901.5030587611. The cubic root of 8418720 is about 203.4301667834.

The spelling of 8418720 in words is "eight million, four hundred eighteen thousand, seven hundred twenty".