6428722 has 8 divisors (see below), whose sum is σ = 9665136. Its totient is φ = 3207012.

The previous prime is 6428693. The next prime is 6428731. The reversal of 6428722 is 2278246.

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

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, 2508 + ... + 4375.

It is an arithmetic number, because the mean of its divisors is an integer number (1208142).

Almost surely, 2^6428722 is an apocalyptic number.

6428722 is a deficient number, since it is larger than the sum of its proper divisors (3236414).

6428722 is a wasteful number, since it uses less digits than its factorization.

6428722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7352.

The product of its digits is 10752, while the sum is 31.

The square root of 6428722 is about 2535.4924570978. The cubic root of 6428722 is about 185.9408799659.

The spelling of 6428722 in words is "six million, four hundred twenty-eight thousand, seven hundred twenty-two".