402868 has 24 divisors (see below), whose sum is σ = 766080. Its totient is φ = 184800.

The previous prime is 402863. The next prime is 402869. The reversal of 402868 is 868204.

402868 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2593 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (31920).

2⁴⁰²⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

402868 is a deficient number, since it is larger than the sum of its proper divisors (363212).

402868 is a wasteful number, since it uses less digits than its factorization.

402868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 402868 is about 634.7188353909. The cubic root of 402868 is about 73.8563074758.

It can be divided in two parts, 4028 and 68, that added together give a 12-th power (4096 = 2¹²).

The spelling of 402868 in words is "four hundred two thousand, eight hundred sixty-eight".