6428940 has 48 divisors (see below), whose sum is σ = 20573952. Its totient is φ = 1469376.

The previous prime is 6428921. The next prime is 6428957. The reversal of 6428940 is 498246.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7234 + ... + 8073.

It is an arithmetic number, because the mean of its divisors is an integer number (428624).

Almost surely, 2^6428940 is an apocalyptic number.

6428940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6428940 is an abundant number, since it is smaller than the sum of its proper divisors (14145012).

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

6428940 is a wasteful number, since it uses less digits than its factorization.

6428940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15326 (or 15324 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 6428940 is about 2535.5354464097. The cubic root of 6428940 is about 185.9429817135.

The spelling of 6428940 in words is "six million, four hundred twenty-eight thousand, nine hundred forty".