6428700 has 72 divisors (see below), whose sum is σ = 20675760. Its totient is φ = 1713600.

The previous prime is 6428693. The next prime is 6428731. The reversal of 6428700 is 78246.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1510 + ... + 3890.

Almost surely, 2^6428700 is an apocalyptic number.

6428700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6428700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10337880).

6428700 is an abundant number, since it is smaller than the sum of its proper divisors (14247060).

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

6428700 is a wasteful number, since it uses less digits than its factorization.

6428700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404 (or 2391 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 6428700 is about 2535.4881186864. The cubic root of 6428700 is about 185.9406678603.

The spelling of 6428700 in words is "six million, four hundred twenty-eight thousand, seven hundred".