6402788 has 24 divisors (see below), whose sum is σ = 13000512. Its totient is φ = 2702304.

The previous prime is 6402787. The next prime is 6402817. The reversal of 6402788 is 8872046.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6402787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170 + ... + 3582.

It is an arithmetic number, because the mean of its divisors is an integer number (541688).

Almost surely, 2^6402788 is an apocalyptic number.

It is an amenable number.

6402788 is an abundant number, since it is smaller than the sum of its proper divisors (6597724).

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

6402788 is a wasteful number, since it uses less digits than its factorization.

6402788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491 (or 3489 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 6402788 is about 2530.3730950198. The cubic root of 6402788 is about 185.6905093258.

The spelling of 6402788 in words is "six million, four hundred two thousand, seven hundred eighty-eight".