8956720 has 20 divisors (see below), whose sum is σ = 20824560. Its totient is φ = 3582656.

The previous prime is 8956699. The next prime is 8956723. The reversal of 8956720 is 276598.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 8956720.

It is not an unprimeable number, because it can be changed into a prime (8956723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55900 + ... + 56059.

It is an arithmetic number, because the mean of its divisors is an integer number (1041228).

Almost surely, 2^8956720 is an apocalyptic number.

8956720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8956720 is an abundant number, since it is smaller than the sum of its proper divisors (11867840).

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

8956720 is a wasteful number, since it uses less digits than its factorization.

8956720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111972 (or 111966 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 8956720 is about 2992.7779737227. Note that the first 3 decimals coincide. The cubic root of 8956720 is about 207.6744166644.

The spelling of 8956720 in words is "eight million, nine hundred fifty-six thousand, seven hundred twenty".