402626166 has 8 divisors (see below), whose sum is σ = 805252344. Its totient is φ = 134208720.

The previous prime is 402626143. The next prime is 402626167. The reversal of 402626166 is 661626204.

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

402626166 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402626167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33552175 + ... + 33552186.

It is an arithmetic number, because the mean of its divisors is an integer number (100656543).

Almost surely, 2^402626166 is an apocalyptic number.

402626166 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.

402626166 is a wasteful number, since it uses less digits than its factorization.

402626166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67104366.

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

The square root of 402626166 is about 20065.5467406199. The cubic root of 402626166 is about 738.4152633880.

The spelling of 402626166 in words is "four hundred two million, six hundred twenty-six thousand, one hundred sixty-six".