8428690 has 8 divisors (see below), whose sum is σ = 15171660. Its totient is φ = 3371472.

The previous prime is 8428687. The next prime is 8428691. The reversal of 8428690 is 968248.

It can be written as a sum of positive squares in 2 ways, for example, as 8346321 + 82369 = 2889^2 + 287^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×8428690² = 142085630232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8428691) 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, 421425 + ... + 421444.

Almost surely, 2^8428690 is an apocalyptic number.

8428690 is a deficient number, since it is larger than the sum of its proper divisors (6742970).

8428690 is a wasteful number, since it uses less digits than its factorization.

8428690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842876.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 8428690 is about 2903.2206254434. The cubic root of 8428690 is about 203.5104402156.

The spelling of 8428690 in words is "eight million, four hundred twenty-eight thousand, six hundred ninety".