402668286 has 8 divisors (see below), whose sum is σ = 805336584. Its totient is φ = 134222760.

The previous prime is 402668281. The next prime is 402668323. The reversal of 402668286 is 682866204.

It is a sphenic number, since it is the product of 3 distinct primes.

402668286 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402668281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33555685 + ... + 33555696.

It is an arithmetic number, because the mean of its divisors is an integer number (100667073).

Almost surely, 2^402668286 is an apocalyptic number.

402668286 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

402668286 is a wasteful number, since it uses less digits than its factorization.

402668286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67111386.

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 402668286 is about 20066.5962734092. The cubic root of 402668286 is about 738.4410118109.

The spelling of 402668286 in words is "four hundred two million, six hundred sixty-eight thousand, two hundred eighty-six".