6402726 has 40 divisors (see below), whose sum is σ = 15655464. Its totient is φ = 1939680.

The previous prime is 6402719. The next prime is 6402731. The reversal of 6402726 is 6272046.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6402726.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 15 + ... + 3578.

Almost surely, 2^6402726 is an apocalyptic number.

6402726 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6402726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7827732).

6402726 is an abundant number, since it is smaller than the sum of its proper divisors (9252738).

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

6402726 is a wasteful number, since it uses less digits than its factorization.

6402726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3618 (or 3609 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 6402726 is about 2530.3608438324. The cubic root of 6402726 is about 185.6899099594.

The spelling of 6402726 in words is "six million, four hundred two thousand, seven hundred twenty-six".