8428770 has 96 divisors (see below), whose sum is σ = 26552448. Its totient is φ = 1810944.

The previous prime is 8428769. The next prime is 8428789. The reversal of 8428770 is 778248.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10317 + ... + 11103.

It is an arithmetic number, because the mean of its divisors is an integer number (276588).

Almost surely, 2^8428770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8428770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13276224).

8428770 is an abundant number, since it is smaller than the sum of its proper divisors (18123678).

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

8428770 is a wasteful number, since it uses less digits than its factorization.

8428770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 8428770 is about 2903.2344032131. The cubic root of 8428770 is about 203.5110840793.

The spelling of 8428770 in words is "eight million, four hundred twenty-eight thousand, seven hundred seventy".