6864428 has 6 divisors (see below), whose sum is σ = 12012756. Its totient is φ = 3432212.

The previous prime is 6864427. The next prime is 6864437. The reversal of 6864428 is 8244686.

It is a happy number.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 6864391 and 6864400.

It is not an unprimeable number, because it can be changed into a prime (6864427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 858050 + ... + 858057.

It is an arithmetic number, because the mean of its divisors is an integer number (2002126).

Almost surely, 2^6864428 is an apocalyptic number.

It is an amenable number.

6864428 is a deficient number, since it is larger than the sum of its proper divisors (5148328).

6864428 is a wasteful number, since it uses less digits than its factorization.

6864428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716111 (or 1716109 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 6864428 is about 2620.0053435060. The cubic root of 6864428 is about 190.0501068216.

The spelling of 6864428 in words is "six million, eight hundred sixty-four thousand, four hundred twenty-eight".