8428788 has 36 divisors (see below), whose sum is σ = 21474180. Its totient is φ = 2787456.

The previous prime is 8428769. The next prime is 8428789. The reversal of 8428788 is 8878248.

It can be written as a sum of positive squares in 2 ways, for example, as 3175524 + 5253264 = 1782^2 + 2292^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8428789) 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, 4078 + ... + 5786.

It is an arithmetic number, because the mean of its divisors is an integer number (596505).

Almost surely, 2^8428788 is an apocalyptic number.

It is an amenable number.

8428788 is an abundant number, since it is smaller than the sum of its proper divisors (13045392).

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

8428788 is a wasteful number, since it uses less digits than its factorization.

8428788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856 (or 1851 counting only the distinct ones).

The product of its digits is 229376, while the sum is 45.

The square root of 8428788 is about 2903.2375032022. The cubic root of 8428788 is about 203.5112289481.

It can be divided in two parts, 8428 and 788, that added together give a square (9216 = 96²).

The spelling of 8428788 in words is "eight million, four hundred twenty-eight thousand, seven hundred eighty-eight".