402968 has 16 divisors (see below), whose sum is σ = 800280. Its totient is φ = 189568.

The previous prime is 402949. The next prime is 402991. The reversal of 402968 is 869204.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 402968.

It is a congruent number.

It is an unprimeable number.

402968 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1346 + ... + 1617.

2⁴⁰²⁹⁶⁸ is an apocalyptic number.

It is an amenable number.

402968 is a deficient number, since it is larger than the sum of its proper divisors (397312).

402968 is a wasteful number, since it uses less digits than its factorization.

402968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986 (or 2982 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 402968 is about 634.7976055405. The cubic root of 402968 is about 73.8624178476.

It can be divided in two parts, 40296 and 8, that added together give a palindrome (40304).

The spelling of 402968 in words is "four hundred two thousand, nine hundred sixty-eight".