402666216 has 32 divisors (see below), whose sum is σ = 1065882240. Its totient is φ = 126326528.

The previous prime is 402666211. The next prime is 402666241. The reversal of 402666216 is 612666204.

It is not an unprimeable number, because it can be changed into a prime (402666211) 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, 493056 + ... + 493871.

It is an arithmetic number, because the mean of its divisors is an integer number (33308820).

Almost surely, 2^402666216 is an apocalyptic number.

It is an amenable number.

402666216 is an abundant number, since it is smaller than the sum of its proper divisors (663216024).

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

402666216 is a wasteful number, since it uses less digits than its factorization.

402666216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986953 (or 986949 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 402666216 is about 20066.5446950889. The cubic root of 402666216 is about 738.4397464389.

The spelling of 402666216 in words is "four hundred two million, six hundred sixty-six thousand, two hundred sixteen".