6428724 has 12 divisors (see below), whose sum is σ = 15000384. Its totient is φ = 2142904.

The previous prime is 6428693. The next prime is 6428731. The reversal of 6428724 is 4278246.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267852 + ... + 267875.

It is an arithmetic number, because the mean of its divisors is an integer number (1250032).

Almost surely, 2^6428724 is an apocalyptic number.

It is an amenable number.

6428724 is an abundant number, since it is smaller than the sum of its proper divisors (8571660).

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

6428724 is a wasteful number, since it uses less digits than its factorization.

6428724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535734 (or 535732 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 6428724 is about 2535.4928514985. The cubic root of 6428724 is about 185.9408992482.

The spelling of 6428724 in words is "six million, four hundred twenty-eight thousand, seven hundred twenty-four".