6466428 has 18 divisors (see below), whose sum is σ = 16345784. Its totient is φ = 2155464.

The previous prime is 6466417. The next prime is 6466429. The reversal of 6466428 is 8246646.

It is a happy number.

6466428 is a `hidden beast` number, since 6 + 4 + 6 + 642 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 179623 = 6466428 / (6 + 4 + 6 + 6 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 6466392 and 6466401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6466429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89776 + ... + 89847.

Almost surely, 2^6466428 is an apocalyptic number.

It is an amenable number.

6466428 is an abundant number, since it is smaller than the sum of its proper divisors (9879356).

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

6466428 is a wasteful number, since it uses less digits than its factorization.

6466428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179633 (or 179628 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 6466428 is about 2542.9172224042. The cubic root of 6466428 is about 186.3037008642.

The spelling of 6466428 in words is "six million, four hundred sixty-six thousand, four hundred twenty-eight".