8720470 has 24 divisors (see below), whose sum is σ = 17255952. Its totient is φ = 3170640.

The previous prime is 8720447. The next prime is 8720471. The reversal of 8720470 is 740278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2394 + ... + 4813.

It is an arithmetic number, because the mean of its divisors is an integer number (718998).

Almost surely, 2^8720470 is an apocalyptic number.

8720470 is a deficient number, since it is larger than the sum of its proper divisors (8535482).

8720470 is a wasteful number, since it uses less digits than its factorization.

8720470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7236 (or 7225 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 8720470 is about 2953.0441920161. The cubic root of 8720470 is about 205.8321912368.

The spelling of 8720470 in words is "eight million, seven hundred twenty thousand, four hundred seventy".